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Endocrine Glands

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Question
Answer
condition resulting from excessive secretion of growth hormone in the adult   acromegaly  
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disease caused by chronic adrenal cortical hypofunction, leading to atrophy/destruction of both adrenal glands   Addison disease  
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hormone secretes by anterior pituitary lobe, stimulating adrenal cortex manufacturing & secreting of adrenal cortical hormones   adrenocorticotrophic hormone  
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clinical disorder of adrenal function characterized by overproduction of adrenal sex hormones   adrenogenital syndrome  
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steroid hormone produced by adrenal cortex that regulates rate of sodium absorption from renal tubules   aldosterone  
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absence of menses   amenorrhea  
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posterior lobe pituitary hormone regulating urine concentration by altering permeability of renal collecting tubules   antidiuretic hormone (ADH)  
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cell containing numerous variable-sized granules that stain intensely purple w/basic dyes   basophil  
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hormone that lowers calcium; produced by interfollicular cells of thyroid gland   calcitonin  
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adrenal medullary hormones epinephrine & norepinephrine   catecholamines  
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anterior lobe pituitary epithelial cells containing sparse poorly stained granules   chromophobe cells  
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autoimmune disease in which autoantibody directed against thyroid epithelial cells causes progressive destruction of thyroid gland, leading to hypothyroidism   chronic thyroiditis  
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chronic thyroiditis is also known as   Hashimoto  
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eosinophilic material present within thyroid follicles   colloid  
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major glucocorticoid   cortisol  
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hypothyroidism in an infant   cretinism  
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condition resulting from failure of posterior lobe to secrete ADH   diabetes insipidus  
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chemical mediator released by hypothalamic neurons   dopamine  
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drug that combines w/cell dopamine receptors & causes same cell response the would be produced by dopamine   dopamine agonist  
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an example of a dopamine agonist would be   bromocriptine  
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bromocriptine is a dopamine agonist that inhibits   prolactin secretion  
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cell whose cytoplasm is filled w/large, uniform granules that stain intensely red w/acid dyes   eosinophil  
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one of the catecholamines secretes by adrenal medulla   epinephrine  
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named for protrusion of eyes seen in many patient's with this disease. another name for Graves disease   exophthalmic goiter  
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autoimmune thyroid disease in which autoantibodies resembling thyroid-stimulating hormone stimulate excessive output of thyroid hormone, causing hyperthyroidism   Graves disease  
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1 of gonoadotropic hormones secreted by anterior lobe of pituitary, which regulates growth & function of gonads   follicle-stimulating hormone (FSH)  
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secretion of milk by breast not associated w/pregnancy/normal lactation   galactorrhea  
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adrenal cortical hormone that regulates carbohydrate metabolism   glucocorticoid  
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enlargement of thyroid gland   goiter  
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anterior lobe pituitary hormone that stimulates growth of bone & other body tissues   growth hormone  
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portion of brain stem that forms floor of 3rd ventricle; contains clusters of nerve cells that regulate various body functions   hypothalamus  
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1 of gonadotropic hormones secretes by anterior lobe of pituitary; regulates growth & function of gonads   luteinizing hormone (LH)  
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hormone produced by pituitary; causes darkening of skin   melanin-stimulating hormone (MSH)  
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adrenal cortical hormone that regulates salt & water metabolism   mineralocorticoid  
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hypothyroidism in adult   myxedema  
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1 of the catecholamines secretes by adrenal medulla   norepinephrine  
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hormone stored in posterior lobe of pituitary that causes uterine contraction during labor & ejection of milk from breast lobules into larger ducts   oxytocin  
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failure of secretion of all anterior lobe pituitary hormones   panhypopituitarism  
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catecholamine-secreting tumor of adrenal medulla   pheochromocytoma  
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hormone produced by anterior lobe of pituitary that stimulates milk secretion   prolactin  
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hypothalamic hormone that suppresses release of prolactin from anterior lobe of pituitary   prolactin inhibitory factor (PIF)  
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spasm of skeletal muscles caused by subnormal level of ionized calcium in blood   tetany  
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protein within colloid of thyroid follicles to which thyroid hormone is attached   thyroglobulin  
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hormone secreted by anterior lobe of pituitary; regulated thyroid function   thyroid-stimulating hormone (TSH)  
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secrete hormones directly into the blood   endocrine glands  
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characterized by an increased production of hormones, or hypersecretion   dysfunctional endocrine gland  
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this gland secretes nine hormones   the pituitary gland  
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prolactin is a pituitary hormone that is regulated through   an inhibitory factor  
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thyroid gland, adrenal glands, & gonads are all affected by   panhypopituitarism  
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leads to a deceleration of all bodily functions   hyperthyroidism  
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rapid, pulse, weight loss, tremors & irritability are all symptoms of   a toxic goiter  
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Exposure of the head and neck to high levels of radiation can result in   well-differentiated tumors  
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iodine deficiency, enzyme deficiencies, & increased hormone requirements are major factors leading to development of a   toxic goiter  
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Myxedema is accompanied by a decreased level of   TSH  
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blood glucose levels, sodium, potassium, & increased pigmentation are all   affected by Addison's disease  
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can cause precocious puberty and masculine development in females   Adrenogenital Syndrome  
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decreased calcium in the bones, usually secondary to an adenoma, hypercalcemia, & fragile bones all accompany   hyperparathyroidism  
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pituitary, thyroid, parathyroid, adrenal cortex & medulla, pancreatic islets, & ovaries/testes are the   major endocrine glands  
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controls amount of hormone synthesized and released by an endocrine gland   level of hormone in circulation  
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endocrine gland disorders consist of   hypersecretion or hyposecretion  
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degree of dysfunction & the age/sex of affected individual are the factors considered when determining   clinical effects of disturbance of endocrine gland function  
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due to the thyroid gland affecting growth & development as well as metabolic processes disturbed function will produce different clinical pictures in   an adult & a child  
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masculinization of the female/feminization of the male   virilism  
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contains an anterior lobe, intermediate lobe (rudimentary structure), & posterior lobe; suspended by stalk from hypothalamus at base of brain   pituitary  
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hormones secrete by the pituitary gland & influences the activity of other endocrine glands   tropic hormones  
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composed of cords of epithelial cells containing hormones that are synthesized & stored within   anterior lobe of pituitary  
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supplies blood to anterior lobe of pituitary through veins connecting capillaries of median eminence of hypothalamus w/those of anterior lobe   pituitary portal system  
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release of hormones stored in pituitary's anterior lobe is regulated by hormonal substances called   releasing hormones (or releasing factors)  
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releasing hormones are synthesized in   the hypothalamus  
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releasing hormones are carried to cells of pituitary's anterior lobe in the blood flow through   the portal system  
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hormone response of target gland reflects net effect of interaction between releasing/inhibiting hormones   hypothalamic hormones that inhibit  
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consists of meshwork of nerve fibers intermixed w/modified neuroglial cells; connected through bundles of nerve fibers through pituitary stalk   pituitary posterior lobe  
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hormones in the posterior lobe are synthesized within the hypothalamus, then transmitted down ___ ___ in pituitary stalk to posterior lobe for storage   nerve axons  
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stored posterior lobe hormones are released in response to ___ ___ transmitted from hypothalamus down pituitary stalk   nerve impulses  
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controls release of hormones from both anterior/posterior pituitary lobes   the hypothalamus  
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to some extent influences by emotional stimuli (i.e. anxiety, rage, & fear)   pituitary secretions  
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pituitary secretions are also influenced by ___ ___ that enter nervous system & are in turn relayed to the hypothalamus   sensory impulses  
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tropic hormones are regulated by the level of hormone produced by   the target gland  
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tropic hormones have a ___ ___ that maintains uniform hormone output   self-regulating mechanism  
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secretion of the tropic hormone prolactin is controlled by the   prolactin inhibitory factor  
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TSH stimulates the release of ___ & thyroid hormones   prolactin  
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somatropin is another name for   growth hormone  
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growth hormone stimulates the liver to produce somatomedin, exerting its __ effects on tissues indirectly   growth-promoting  
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any of several endogenous peptides produced especially in the liver that are dependent on and probably mediate growth hormone activity   somatomedin  
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growth hormone, prolactin, TSH, ACTH, FSH, & LH are all   anterior lobe hormones  
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ADH & oxytocin are all   posterior lobe hormones  
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ADH causes more   concentrated urine  
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deficiency of growth hormone & stunts growth and development   pituitary dwarfism  
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failure of kidney to respond to ADH   nephrogenic diabetes insipidus  
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unable to absorb H2O, excretion of large volume of very dilute urine, & caused by injury,tumor, or other disease of posterior lobe   characteristics of diabetes insipidus  
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if the posterior lobe is the cause of diabetes insipidus, treatment consists of   supplying ADH  
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if the kidneys are the cause of diabetes insipidus, treatment consists of   drugs to make kidneys more responsive to ADH  
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hormone-secreting tumor in an endocrine gland   functional tumors  
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generally each type of functional tumor produces a   characteristic clinical syndrome  
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tumor that is in an endocrine gland but does not secrete hormones   nonfunctional tumors  
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although no hormones are produced a nonfunctional pituitary tumor may cause problems because its is located close to the   optic chiasm, optic nerves, & other vital structures at base of brain  
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may erode pituitary fossa, encroach on optic chiasm, & disrupt hormone-producing functions of adjacent normal anterior lobe cells by compression from enlargement of tumor are all   effects of enlarging nonfunctional pituitary tumor  
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resection of pituitary tumor via endoscopy through the nasal cavity & sphenoid sinus   transsphenoidal resection  
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determined by type, hormones produced, & size   treatment of pituitary tumor  
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the usual treatment of a pituitary tumor is   surgical removal  
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after removing a pituitary tumor surgically some patients may also required   radiation treatment  
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overproduction of growth hormone; causes giantism in children, acromegaly in adults, & may cause visual disturbances   pituitary adenoma  
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spontaneous secretion of milk from breasts & cessation of menstrual periods, in a non-pregnant woman, due to excess secretion of prolactin   amenorrhea-galactorrhea syndrome  
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an important cause of amenorrhea-galactorrhea syndrome   prolactin-secreting pituitary adenoma  
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very small tumor   microadenoma  
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causes few symptoms other that those related to excessive prolactin production   prolactin-secreting pituitary microadenoma  
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larger prolactin-secreting pituitary adenomas can cause ___ of pituitary fossa & visual disturbances   enlargement  
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prolactin-secreting pituitary adenomas can be   surgically excised  
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prolactin-secreting pituitary microadenomas can often be inhibited by   a dopamine agonist drug  
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presence of an abnormally high concentration of prolactin in the blood   hyperprolactinaemia  
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estrogen, antihypertensive drugs, & phenothiazine drugs & antidepressants can raise prolactin levels resulting in   amenorrhea or galactorrhea  
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2 lateral lobes connected by isthmus; located in neck overlying upper trachea & regulated by pituitary TSH   thyroid gland  
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located on posterior surface of thyroid are four   parathyroid glands  
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thyroid gland is composed of __ __ that produce and store hormones   thyroid follicles  
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hormone production of the thyroid gland is regulated by   thyroid stimulating hormone, or (TSH)  
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triiodothyronine (T3) & thyroxin (T4) is synthesized by the   follicular cells of thyroid  
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regulate body's metabolic processes & are required for normal development of nervous system   T3 & T4  
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general term referring to the 2 metabolic hormones T3&T4   thyroid hormone  
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the numbers attached to T3 & T4 indicate the number of ___ atoms attached to the molecule   iodine  
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majority of thyroid hormone is attached to thyroid-binding globulin and is biologically   inactive  
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the small amount of thyroid hormone that circulates unattached, is the ___ ___ form   physiologically active  
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rapid pulse, increased metabolism, hyperactive reflexes, emotional lability, GI effect: diarrhea, & warm/moist skin are all symptoms/signs of   hyperthyroidism  
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slow pulse, decreased metabolism, sluggish reflexes, placid/phlegmatic, GI effect: constipation, cold/dry skin   hypothyroidism  
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uniformly enlarged thyroid gland   diffuse goiter  
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multiple nodules of proliferating thyroid tissue   nodular goiter  
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enlarged thyroid that produces excessive amount of hormone & causes symptoms of hyperthyroidism   toxic goiter  
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enlarged thyroid that does not produce excessive amount of hormone   nontoxic goiter  
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inadequate secretion of thyroid hormone is the basic cause for   nodular & diffuse goiter  
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when there is an iodine deficiency, enlargement of the thyroid is in response to TSH stimulation in an attempt to __ __ from the blood to make enough hormone   extract iodine  
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in Graves disease an antithyroid antibody stimulates thyroid, mimics TSH function, and is not subject TSH   control mechanisms  
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drugs that block synthesis of hormone by the hyperactive gland   antithyroid drugs  
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surgical excision to remove hyperactive thyroid will reduce   source of the hormone  
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irradiation destroys part of the gland & reduces its hormone output   radioactive iodine  
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myxedema received its name due to localized accumulations of __ material in the skin   mucinous  
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individuals have low levels of circulating thyroid hormone & high levels of TSH trying to ___ the thyroid gland to increase hormone output   stimulate  
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treated by supplying the deficient hormone, which results in clinical improvement   hypothyroidism  
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hypothyroidism in a newborn infant is called   congenital hypothyroidism  
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congenital hypothyroidism can be caused by failure of gland to develop or from genetically determined __ __ __ necessary for thyroid hormone synthesis   deficiency of enzymes  
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if congenital hypothyroidism is not detected the infant will remain   permanently stunted in growth & mentally retarded  
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congenital hypothyroidism is called   cretinism  
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antithyroid antibodies & activates T lymphocytes are directed against thyroid antigens, attacking & destroying the thyroid   Hashimoto thyroiditis  
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Hashimoto thyroiditis is the most common cause of hypothyroidism in adults, & occurs predominantly in   middle-aged women  
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one of the autoantibodies in Hashimoto thyroiditis is directed against TSH receptors on thyroid cells, which   prevents TSH from attaching to thyroid cells to stimulate it  
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autoantibodies destroy TSH receptors in   Hashimoto thyroiditis  
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autoantibody stimulates TSH receptors in   Graves disease  
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thyroid usually enlarged by diffuse infiltration of activated T lymphocytes & plasma cells destroying the thyroid gland   chronic thyroiditis  
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Hashimoto thyroiditis does not have a   specific treatment available  
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physicians are guided by the level of thyroid hormone in blood & level of TSH when determining   how much thyroid hormone to prescribe  
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well-circumscribed tumors composed of mature follicles that often contain large amounts of colloid   thyroid adenomas  
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well-differentiated, undifferentiated, & medullary are the three type of   thyroid carcinoma  
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usually occurs in your adults & very low-grade malignancy   well-differentiated thyroid carcinoma  
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most common, tumor composed of well-differentiated papillary processes covered by well-differentiated thyroid epithelial cells   papillary carcinoma  
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less common, tumor cells form colloid-filled follicles which resemble normal thyroid tissue   follicular carcinoma  
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surgical resection of thyroid gland   thyroidectomy  
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develops in older persons, composed of rapidly growing bizarre tumor cells, & has poor prognosis   undifferentiated thyroid carcinoma  
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uncommon, derived from calcitonin-secreting parafollicular cells of thyroid, & characteristic histologic pattern   medullary thyroid carcinoma  
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measurement of calcitonin levels in blood has been used as a __ __ for medullary thyroid carcinoma because tumor cells often secrete calcitonin   diagnostic test  
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lowers blood calcium   calcitonin  
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increases incidence of benign and malignant thyroid tumors after latent period of 5-10 years   radiation  
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most thyroid tumors are well-differentiated and easily   treated  
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blood calcium level is in ___ with calcium in the bone   equilibrium  
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1/2 blood calcium is present as __ __ and is the active form   calcium ions (Ca2+)  
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1/2 blood calcium is bound to __ and is biologically inactive   proteins  
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required for normal cardiac/skeletal muscle contraction, nerve impulse transmission, & coagulation of blood   adequate concentration of ionized calcium  
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caused increased excitability of nerve & muscle cells, leading to tetany   subnormal level of ionized calcium  
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diminishes neuromuscular excitability & leads to generalized muscular weakness   high level of ionized calcium  
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regulates level of ionized calcium in blood by regulating release of calcium from bone, absorption from intestines, & rate of excretion by kidneys   parathyroid glands  
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regulated by level of ionized calcium in blood rather than by tropic hormone from pituitary   secretion of parathyroid hormones  
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if ionized calcium levels rise, parathyroid hormone secretion   declines  
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if ionized calcium levels decrease, parathyroid hormone secretion   increases  
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any abnormality in parathyroid hormone secretion will eventually alter amount of   calcium deposited in bones  
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hyperparathyroidism can lead to __ __ from excessive calcium excreted in urine   renal calculi  
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hyperparathyroidism can occasionally lead to calcium precipitating out of the blood & become deposited in   kidneys, lungs, & other tissues  
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treatment for hyperparathyroidism   removal of tumor through surgical excision  
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accidental removal of parathyroid glands during thyroid surgery can lead to   hypoparathyroidism  
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blood calcium falls abruptly causing neuromuscular excitability and tetany   effects of hypoparathyroidism  
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high-calcium diet & supplementary vitamin D are treatments to   raise calcium levels in hypoparathyroidism  
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glucocorticoids, mineralocorticoids, & sex hormones are the three classes of   steroid hormones secreted by adrenal cortex  
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secreted in response to stimulation by adrenocorticotropic hormone (ACTH) & feedback mechanism controlled by same negative feedback mech. as thyroid   glucocorticoids  
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major glucocorticoid   cortisol  
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regulate electrolyte/water balance; promote absorption sodium/water & excretion of potassium by renal tubules   mineralocorticoids  
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major mineralocorticoid & regulated by more than one mechanism   aldosterone  
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most potent stimulus for aldosterone secretion   renin-angiotensin system  
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adrenal cortex produces weak ___ steroid hormones in response to ACTH stimulation, further metabolized according to individual's sex   androgenic (testosterone-like)  
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in most cases Addison's disease results from an ___ ___ in which destructive autoantibodies directed against adrenal cortical cells & cytotoxic lymphocytes destroy cortex   autoimmune disorder  
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less common, destruction caused by tuberculosis, histoplasmosis, or metastatic carcinoma involving both   adrenal glands  
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caused by secretion of ACTH along with MSH, which produced from same precursor molecule giving rise to ATCH   increased pigmentation with Addison's disease  
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can lead to high sodium/blood volume/blood pressure, low potassium level leading to neuromuscular manifestations   over production of aldosterone  
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congenital adrenal hyperplasia & sex-hormone-producing tumors are an effect of   overproduction of adrenal sex hormones  
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produced by chromaffin cells & stored within; released in response to nerve impulses transmitted to medulla by sympathetic nervous system   catecholamines  
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benign tumor of adrenal medulla, arises from chromaffin cells; secretes large amounts of catecholamines & severely effects heart/vascular system   pheochromocytoma  
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due to severe hypertension pheochromocytoma can lead to   cerebral hemorrhage  
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mineralocorticoid deficiency from Addison's disease leads to   low blood volume & pressure  
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treatment for Addison's disease is   administration of corticosteroids  
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disturbed carbohydrate, fat, and protein metabolism   glucocorticoid excess  
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high blood volume and high blood pressure   mineralocorticoid excess  
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glucocorticoid & mineralocorticoid excess are effects of   Cushing disease  
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hormone-producing pituitary microadenoma/adrenal cortex adenoma, hyperplastic adrenal glands, administration large amount of corticosteroids, other tumors are all causes of   cushing disease  
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overproduction of aldosterone is usually due to   aldosterone-secreting adenoma  
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pancreatic tissue that functions as an endocrine gland   pancreatic islets  
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cells responsible for insulin production   Beta cells  
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cell responsible for glucagon   Alpha cells  
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cells responsible for somatostatin   delta cells  
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hormones secreted by non-endocrine tumors that are identical with or mimic action of true hormones   ectopic hormones  
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ectopic hormones originate from   malignant tumors  
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any event that disturbs homeostasis   stress  
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injury, surgery, prolonged exposure to cold, vigorous exercise, pain, or strong emotional stimulus such as anxiety or fear cause   stress to endocrine system  
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fear-fight-flight reaction which is mediated by sympathetic nervous system and adrenal medulla   acute response to stress  
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alters metabolism, taxes CV system, impairs inflammatory and immune responses   chronic response to stress  
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chronic response to stress involves   adrenal cortex  
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chronic response to stress predisposes to   illness  
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occurs when caloric intake > requirements   obesity  
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obesity is usually NOT result of   endocrine or metabolic disturbance  
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cardiovascular disease, diabetes, cancer, musculoskeletal problems & impaired pulmonary function are all   health consequences of obesity  
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