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Med Term - Ch 9
SEE SLIDES (Targets)! Definitions, abbreviations
Term | Definition |
---|---|
anterior pituitary functions | Promotes growth of all body tissues Stimulates thyroid gland to produce thyroid hormones Stimulates adrenal cortex to produce cortical hormones; aids in protecting body in stress situations (injury, pain) Misc. Reproductive functions. |
posterior pituitary functions | Promotes water reabsorption in kidney tubules; causes blood vessels to constrict Causes uterine contraction; causes milk ejection from mammary glands |
thyroid functions | Increase metabolic rate and heat production, influencing both physical and mental activities; required for normal growth |
parathyroid functions | Regulates calcium exchange between blood and bones; increases blood calcium level |
adrenal cortex functions | Aids in metabolism of carbohydrates, proteins, and fats; active during stress Aids in regulating electrolytes and water balance |
adrenal medulla functions | Response to stress; increases respiration, blood pressure, and heart rate |
pancreatic islet functions | Aids glucose transport into cells; required for cellular metabolism of nutrients, especially glucose; decreases blood glucose levels Stimulates liver to release glucose, thereby increasing blood glucose levels |
pineal functions | Regulates mood, sexual development, and daily cycles in response to environmental light |
testis functions | Stimulates growth and development of sexual organs plus development of secondary sexual characteristics; stimulates maturation of sperm cells |
ovary functions | Stimulates growth of primary sexual organs and development of secondary sexual characteristics Prepares uterine lining for implantation of fertilized ovum; aids in maintaining pregnancy; stimulates development of mammary glands’ secretory tissue |
hypophysis | Another name for the pituitary gland. |
adenohypophysis | The anterior lobe of the pituitary gland |
neurohypophysis | The posterior lobe of the pituitary gland |
somatotropin | Growth hormone, produced in the anterior pituitary. |
antidiuretic hormone | Acts on the kidneys to conserve water and also promotes constriction of blood vessels. Produced in the posterior pituitary. |
oxytocin | Stimulates uterine contractions and promotes milk “letdown” in the breasts during lactation. Produced in the posterior pituitary. |
endocrine | Pertaining to a ductless gland that secretes hormones into the blood |
hormone | A secretion of an endocrine gland; a substance that travels in the blood and has a regulatory effect on tissues, organs, or glands |
hypothalamus | A portion of the brain that controls the pituitary gland, produces hormones, and is active in maintaining homeostasis |
prostaglandins | A group of hormones produced throughout the body that have a variety of effects, including stimulation of uterine contractions and regulation of blood pressure, blood clotting, and inflammation |
receptor | A site on the cell membrane or within the cell to which a substance, such as a hormone, attaches |
steroid | A hormone made from lipids; includes the sex hormones and the hormones of the adrenal cortex |
target tissue | The specific tissue on which a hormone acts; may also be called the target organ |
endocrin/o | endocrine glands |
pituitar/i | pituitary gland |
hypophysi/o | pituitary gland |
thyr/o | thyroid gland |
parathyr/o | parathyroid gland |
adren/o, adrenal/o | adrenal gland |
adrenocortic/o | adrenal cortex |
insul/o | pancreatic islets |
hypersecretion of growth hormone | gigantism (children), acromegaly (adults) |
hyposecretion of growth hormone | dwarfism (children) |
acromegaly | Overgrowth of bone and soft tissue, especially in the hands, feet, and face, caused by excess growth hormone in an adult; the name comes from acro meaning “extremity” and megal/o meaning “enlargement” |
Addison disease | A disease resulting from deficiency of adrenocortical hormones; it is marked by darkening of the skin, weakness, and alterations in salt and water balance |
adenoma | A neoplasm of a gland |
adult hypothyroidism | A condition caused by hypothyroidism in an adult; there is dry, waxy swelling, most notable in the face; formerly called myxedema (miks-eh-DE-mah) |
congenital hypothyroidism | A condition caused by lack of thyroid secretion during development and marked by arrested physical and mental growth; also called infantile hypothyroidism |
Cushing disease | Overactivity of the adrenal cortex resulting from excess production of ACTH by the pituitary |
Cushing syndrome | A condition resulting from an excess of hormones from the adrenal cortex; it is associated with obesity, weakness, hyperglycemia, hypertension, and hirsutism (excess hair growth) |
diabetes insipidus | A disorder caused by insufficient release of ADH from the posterior pituitary; it results in excessive thirst and production of large amounts of very dilute urine; insipidus means “tasteless,” referring to the dilution of the urine |
diabetes mellitus (DM) | A disorder of glucose metabolism caused by deficiency of insulin production or inadequate tissue response to insulin |
exophthalmos | Protrusion of the eyeballs, as seen in Graves disease |
gigantism | Overgrowth caused by excess growth hormone from the pituitary during childhood; also called gigantism |
glycated hemoglobin (HbA1c) test | A test that measures the binding of glucose to hemoglobin during the lifespan of a red blood cell; it reflects the average blood glucose level over 2 to 3 months and is useful in evaluating long-term therapy for diabetes mellitus; also called A1c test |
glycosuria | Excess glucose in the urine |
goiter | Enlargement of the thyroid gland; a simple (nontoxic) goiter is caused by iodine deficiency |
Graves disease | An autoimmune disease resulting in hyperthyroidism; a prominent symptom is exophthalmos (protrusion of the eyeballs); also called diffuse toxic goiter |
hyperglycemia | Excess glucose in the blood |
hypoglycemia | Abnormally low level of glucose in the blood |
insulin shock | A condition resulting from an overdose of insulin, causing hypoglycemia |
ketoacidosis | Acidosis (increased acidity of body fluids) caused by excess ketone bodies, as in diabetes mellitus; diabetic acidosis |
metabolic syndrome | A state of hyperglycemia caused by cellular resistance to insulin, as seen in type 2 diabetes, in association with other metabolic disorders; also called syndrome X or insulin resistance syndrome |
anhypopituitarism | Underactivity of the entire pituitary gland |
tetany | Irritability and spasms of muscles; may be caused by low blood calcium and other factors |
sella turcica | A saddle-shaped depression in the sphenoid bone that contains the pituitary gland (literally means “Turkish saddle”) |
sphenoid bone | A bone at the base of the skull that houses the pituitary gland |
adrenogenital syndrome | Condition caused by overproduction of androgens from the adrenal cortex, resulting in masculinization; may be congenital or acquired, usually as a result of an adrenal tumor |
craniopharyngioma | A benign tumor of the pituitary gland |
Hashimoto disease | A chronic thyroiditis of autoimmune origin |
impaired glucose tolerance (IGT) | High blood glucose levels after glucose intake that may signal borderline diabetes mellitus |
ketosis | Accumulation of ketone bodies, such as acetone, in the body; usually results from deficiency or faulty metabolism of carbohydrates, as in cases of diabetes mellitus and starvation |
multiple endocrine neoplasia (MEN) | A hereditary disorder that causes tumors in several endocrine glands; classified according to the combination of glands involved |
pheochromocytoma | A usually benign tumor of the adrenal medulla or other structures containing chromaffin cells (cells that stain with chromium salts) (phe/o means “brown” or “dusky”); the adrenal tumor causes increased production of epinephrine |
pituitary apoplexy | Sudden massive hemorrhage and degeneration of the pituitary gland associated with a pituitary tumor; common symptoms include severe headache, visual problems, and loss of consciousness |
seasonal affective disorder (SAD) | A mood disorder with lethargy, depression, excessive need for sleep, and overeating that generally occurs in winter; thought to be related to melatonin levels as influenced by environmental light |
Simmonds disease | Hypofunction of the anterior pituitary (panhypopituitarism), usually because of an infarction; pituitary cachexia (ka-KEK-se-a) |
thyroid storm | A sudden onset of thyrotoxicosis symptoms occurring in patients with hyperthyroidism who are untreated or poorly treated; may be brought on by illness or trauma; also called thyroid crisis |
thyrotoxicosis | Condition resulting from overactivity of the thyroid gland; symptoms include anxiety, irritability, weight loss, and sweating; the main example of thyrotoxicosis is Graves disease |
von Recklinghausen disease | Bone degeneration caused by excess production of parathyroid hormone; also called Recklinghausen disease of bone |
fasting plasma glucose (FPG) | Measurement of blood glucose after a fast of at least 8 hours; a reading equal to or greater than 126 mg/dL indicates diabetes; also called fasting blood glucose (FBG) or fasting blood sugar (FBS) |
free thyroxine index (FTI, T7) | Calculation based on the amount of T4 present and T3 uptake, used to diagnose thyroid dysfunction |
oral glucose tolerance test (OGTT) | Measurement of glucose levels in blood plasma after administration of a challenge dose of glucose to a fasting patient; used to measure patient’s ability to metabolize glucose |
radioactive iodine uptake test (RAIU) | A test that measures thyroid uptake of radioactive iodine as an evaluation of thyroid function |
radioimmunoassay (RIA) | A method of measuring very small amounts of a substance, especially hormones, in blood plasma using radioactively labeled hormones and specific antibodies |
thyroid scan | Visualization of the thyroid gland after administration of radioactive iodine |
thyroxine-binding globulin (TBG) test | Test that measures the main protein that binds T4 in the blood |
transsphenoidal adenomectomy | Removal of a pituitary tumor through the sphenoid sinus (space in the sphenoid bone) |
A1c | Glycated hemoglobin (test) |
ACTH | Adrenocorticotropic hormone |
ADH | Antidiuretic hormone |
BS | Blood sugar |
CSII | Continuous subcutaneous insulin infusion |
DM | Diabetes mellitus |
FBG | Fasting blood glucose |
FBS | Fasting blood sugar |
FPG | Fasting plasma glucose |
FSH | Follicle-stimulating hormone |
FTI | Free thyroxine index |
GDM | Gestational diabetes mellitus |
GH | Growth hormone |
HbA1c | Hemoglobin A1c; glycated hemoglobin |
IFG | Impaired fasting blood glucose |
IGT | Impaired glucose tolerance |
LH | Luteinizing hormone |
MEN | Multiple endocrine neoplasia |
NPH | Neutral protamine Hagedorn (insulin) |
OGTT | Oral glucose tolerance test |
PRL | Prolactin |
PTH | Parathyroid hormone |
RAIU | Radioactive iodine uptake |
RIA | Radioimmunoassay |
SIADH | Syndrome of inappropriate antidiuretic hormone (secretion) |
T1DM | Type 1 diabetes mellitus |
T2DM | Type 2 diabetes mellitus |
TBG | Thyroxine-binding globulin |
TSH | Thyroid-stimulating hormone |