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Endocrine Disorders
Patho
| Question | Answer |
|---|---|
| ___ is from: congenital malformations, destruction from infection, ischemia, inflammation, autoimmune, and cancer, aging, and necessary hormone < | hypofunction |
| ___ is from: excessive stimulation, hyperplasia, and hormone secreting tumor | hyperfunction |
| px originated with that particular gland | primary |
| gland may be functioning; px originates with a def of a necessary hormone to function | secondary |
| px is a result of hypothalmic activity | tertiary |
| "master gland" | pituitary gland |
| located at the base of the brain next to the hypothalmus | pituitary gland |
| anterior pituitary secretes ____ (6 things) | ACTH, TSH, GH, FSH, LH, prolactin |
| ___ controls cortisol | ACTH |
| ___ controls thyroid hormone | TSH |
| ___ controls sex hormones | LH |
| ___ regulates fertility | FSH |
| there are no s/s of hypopituitarism until ____ | 70-90% destruction |
| ____ def can be life-threatening b/c of its role with adrenal glane | ACTH |
| what is the pattern of hypopituitarism? | GH, then LH and FSH, then TSH, and then ACTH last |
| what are 4 things essential for growth and development? | GH, insulin, thyroid hormone, and androgens |
| controls cell division and synthesis of protein | GH |
| somatotropin | GH |
| GH controls bone growth through ____ | IGF- insulin-like growth factors |
| excessive amounts > glucose levels; < glucose being used for energy, uses protein and fat | > GH |
| where is GH carried? | plasma |
| ht is well below 5th% | short stature |
| functional hypothyroidism + emotional deprivation | psychosocail dwarfism |
| ___ s/s: poor growth, potbelly, and poor eating/drinking habits | psychosocial dwarfism |
| GH are normal, but have a defect in IGF production; rare | laron-type dwarfism |
| has normal birth wt, normal intelligence, short stature, obesity, immature appearance, delay skeletal maturity and puberty | congential GH def |
| soem causes of tall stature | genetic/chrom (Marfan's), >GH, early release of estrogen/androgen |
| d/t excessive GH release prior to epiphyseal closure | gigantism |
| often can reach 7-8ft tall and have acromegaly | gigantism |
| what is the main cause of gigantism? | pituitary tumor |
| > GH after epiphsis closure and is not very common | acromegaly |
| what is the most common cause of acromegaly? | pituitary tumor |
| ___ s/s: large hands and feet, protrusion of hte lower jaw, coarse facial ft, HTN, CAD, CHF, enlarged adrenal thyroid, and parathyroid, HA, sweating, weakness | acromegaly |
| located in the lower neck anterior to the trachea | thyroid |
| produces, stores, and secretes hormones | thyroid |
| responsible for cellular metabolism | T4- thyroxine |
| responsible for regulating cellular metabolism | T3- triiodothyronine |
| calcium regulation | thyrocalcitonin- calcitonin |
| ___ is necessary for the thyroid gland to synthesize and secrete hormones | iodine |
| __ and ___ stimulate body growth, > metabolic rate, heart rate, and glucose | T3 and T4 |
| acts on the kidneys and bones to < serum Ca levels | Calcitonin |
| functional units of the thyroid | follicles |
| increase in thyroid size or hypertrophy | goiter |
| thyroid's attempt to compensate for inadequate TH | goiter |
| results in a hypometabolic state including < metabolism, O2 consumption, and heat production | hypothyroidism |
| what are the primary cause of hypothyroidism? | congenital defects, surgery, radiation, antithyroid meds, iodine def, and thyroditis |
| what are the secondary causes of hypothyroidism? | peripheral resistance to thyroid hormones or pituitary TSH def |
| ___ s/s: memory impairment, edema, hypotension, goiter, wt gain, cold intolerance, bradycardia | hypothyroidism |
| with hypothyroidism everying < except for ___ and ___ | wt and fluid |
| accumulation of protein in the interstitial spaces resulting in > interstitial fluids and non-pitting edema; can also lead to dilated cardiomyopathy | myxedema (hypothyroidism) |
| hypothyroid crisis | myxedematous coma |
| results from exteme or prolonged hypothyroidism and is rare, but life-threatening | myxedematous coma |
| hypermetabolic state | hyperthyroidism |
| ___ s/s: emotional liability, agitation, exophtalmos, > reflexes, tachycardia, diarrhea, muscle weakness, fatigue, flushed skin, goiter, hyperthermia, wt loss, heat intolerance, diaphoresis | hyperthyroidism |
| in hyperthyroidism everything goes up except for __ | weight |
| extreme state of hyperthyroidism- is life-threatening and seen in undx cases | thyroid storm |
| most common in women under 40 and the cause is unknown. it is associated with the human leukocyte antigen | graves' disease |
| ocular px is the most prevalent s/s, but smoking does make it worse | graves' disease |
| located posterior to the thyroid | parathyroid |
| maintain serum Ca bby secreting PTH, which > bone, kidney, and intestinal reaborption of Ca | parathyroid |
| activation of ____ is enhanced in the kidneys by PTH | Vit D |
| leads to hypocalcemia, hyperphosphatemia, hyperreflexia, and altered sensorium | hypoparathyroidism |
| rare, familial disorder with PTH resisitance | pseudohypothyriodism |
| leads to hypercalccemia, hypophosphatemia, bone damage, and renal damage | hyperparathyroidism |
| in ___ see > bicard and < acid---leading to hypokalemia and metabolic acidosis | hyperparathyroidism |
| located superior in each kidney | adrenal gland |
| outer layer of the adrenal gland | cortex |
| secretes mineralcorticoids (aldosterone), glucocorticoids (cortisol, testosterone, and estrogen) | adrenal cortex |
| secretes epi, norepi, and dopamine | adrenal medulla |
| inner layer of adrenal gland | medulla |
| stimulates glucose production, < glucose in the tissue | glucose metabolism |
| > plasma levels and breakdown of proteins | protein metabolism |
| > mobilization and utilization of fatty acids | fat metabolism |
| prevention of inflammatory mediators, suppressing immune response | anti-inflammatory action |
| contributes to emotional instability | psychic effect |
| facilitates humoral and neural influences | permissive effect |
| chronic adrenal suppression with meds leads to ___ | atrophy |
| autosomal recessive trait that effects both genders--- def of enymes necessary for the synthesis of cortisol | congenital adrenal hyperplasia |
| ___ leads to > levels of ACTH and mineralocoticoids | congenital adrenal hyperplasia |
| ___ s/s: abiguous genitalia, hyponatermia, hyperkalemia, vomiting, dehydration, shock | congenital adrenal hyperplasia |
| rare, primary adrenal cortical insufficiency where the adrenal cortical hormones are < and ACTH is > | addison's disease |
| chronic metabolic disease where all of the adrenal cortex is destroyed | addison's disease |
| ___ s/s: related to hormone def and ACTH elevation but do not become apparent until 90% adrenal destruction | addison's disease |
| life-threatening---s/s include N/V, muscular weakness, hypotension, dehydration, vascular collapse | acute adrenal crisis |
| hypercorticolism | Cushing's Syndrome |
| what are the 4 forms of Cushing's syndrome? | cushing's disease, adrenal tumor, ectopic cushings, and iatrogenic |
| excessive ACTH from the pituitary | Cushing's disease |
| caused by a nonpituitary ACTH secreting tumor | ectopic cushing's |
| cushings syndrom from that is from long-term glucocorticoid | iatrogenic |
| ___ s/s: neuro, CV, GI, MS, skin, renal, repriductive, metabolic PX | cushing's syndrome |
| a lack of or inadequate secretion of insulin, or insulin resistance resulting from hyperglycemia | DM |
| most common chronic endocrine disorder | DM |
| ___ works with the liver to maintain blood sugar levels | pancreas |
| 6-carbon molecule | glucose |
| used especially bbyt he brain and the NS | efficient fuel |
| describe the tract and process glucose takes when it enters the body | enters: GI tract, travels: the portal vien into th liver, liver sends: circulatory system, tissue retrieves it from bl strem |
| how does the live adjust blood glucose levels | glycogen synthesis, glycogen breakdown, and synthesis for glucose from noncarbohydrate source (amino acids, lactic acids, triglycerides) |
| 3 sources of energy metabolism | glucose, fat, and protein |
| the most efficient form of fuel storage | fat |
| all cells but ___ and ___ use fat | brain and RBC |
| where does the inital breakdown of fat occur? | liver |
| what is fat released as? | ketones |
| 3/4 of the body's solids are __ | proteins |
| __ are essential for genes, enzymes, muscles, bone, and Hgb | proteins |
| building blocks | amino acids |
| excess protein does not get stored as protein but as... | fat, ketones, or glucose |
| secretes digestive juices into the duodenum | acini |
| secretes glucose-regulating hormones into the blood | islets of langerhans |
| acini and islets of langerhans are apart of the ___ | pancreas tissue |
| islets of langerhans----synthesis and secretion of glucagon | alpha |
| islets of langerhans----synthesis and secretion of insulin | beta |
| islets of langerhans----secretes somatostain | delta |
| inhibits the release of insulin and glucagon, < GI absorption, extends the use of nutrients by the tissues | somatostatin (secreted by delta of islets of langerhans) |
| promotes glucose uptake by target cells and provides for glucose storage as glycogen | insulin |
| prevents fat and glucose breakdown and inhibits gluconegenesis | insulin |
| > protein synthesis | insulin |
| > transport of glucose into fat cells | insulin |
| facilitates trig synthesis from glucose in fat cells | insulin |
| inhibits intracellular breakdown of stored trig | insulin |
| binds to and activates a membrane receptor of the target cells | insulin |
| cell membranes are impermeable to ___ so ___ must be actively transported in | glucose |
| polypeptide molecule | glucagon |
| > during hypoglycemic times and initates glucose release from the liver | glucagon |
| maintain glucose during stress | catecholamine (epi and norepi) |
| catecholamines | epi and norepi |
| > protein synthesis and mobilizes fat from adipose | GH |
| antagonizes insulin-> blood glucose | GH |
| critical to survive starvation and fasting | glucocorticoid |
| stimulates gluconegensis by the liver | glucocorticoid |
| ____ released during times of stress will > glucocorticoid | cortisol |