Term
| negative feedback control mechanisms |
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Definition
| when hormone concentration decreases, the rate of hormone production increases in response |
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Term
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Definition
GH (growth hormone)
prolactin
thyroid stimulating
adrenocorticotropic
gonadotropic (FSH; LH)
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Term
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Definition
| main function is to store and release ADH (vasopressin) and oxytocin |
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Term
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Definition
major function is to increase metabolism
requires iodine in diet
produces calcitonin (dcr ca in blood, slows ca releasing activity of bones, mediate inflammatory response, indicate sepsis)
thyroxine T4
triiodothyronine T3
calcitonin |
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Term
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Definition
posterior of thyroid gland
secrete PTH
incr ca levels
controls phosphate metabolism
vit d req'd for PTH to work |
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Term
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Definition
release hormones essential in glucose metabolism
alpha cells-glucagon
beta cells- insulin
delta cells- somastatin |
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Term
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Definition
zona glomerulosa- mineralocorticoids
zona fasciculate- glucocorticoids, androgens
zona reticularis- screte same hormones as fasciculate |
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Term
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Definition
cortisol (hydrocortisone)
primary glucocorticoid
affects carb metabolism (anti insulin effect)
protein catabolism and fat metabolism
regulates production of glucose (gluconeogenesis)
role in stress response
emotional stability
decreases inflammation (antibodies; wbc) |
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Term
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Definition
aldosterone
essential in metabolism of electrolytes
maintains normal bp and co
deficiencies cause hypotension, hyperkalemia, decr co and shock
excesses cause htn, hypokalemia
stimulated by renin-angiotensin
reabsorbs Na and excretes K |
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Term
| testosterone and estrogen |
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Definition
adrenal cortex (zona fasciculate) secretes androgen
precursor for testosterone and estrogen
gonads (ovaries/testes) also secrete this hormone
adrenals major source of androgens in women |
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Term
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Definition
releases catecholamines when SNS is stimulated
norepinephrine
epinephrine |
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