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Endocrine system (thyroid gland (calcitonin (secreted by parafollicular…
Endocrine system
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reproductive organs
estrogen
secondary sex characteristics, maturation of reproductive organs
progesterone
maturation of breasts, periods
testosterone
secondary sex characteristics, maturation of male reproductive organs, maintains maturity of male reproductive organs, sex drive, maintains normal sperm production
adrenal gland
outer adrenal cortex
zona glomerulsa
mineralocorticoids
aldosterone
stimulates Na+ resorption in kidney tubules, causes tubules to eliminate K+ from body, alters acid-base balance
stimulated: decreases BV or BP causes raas, increased K+ levels, stress causes CRH release by hypothalamus which causes rise in ACTH,
inhibited: decreased levels of K+, increased BP (inhibits raas)
zona fasiculata
glucocorticoids
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cortisol
glucose-diabetogenic effect, enhances epinphrines impact on BP, inhibits collagen synthesis, strong anti-inflammatory effect
stimulated: ACTH release which triggered y CRH release by hypothalamus
inhibited: cortisol feedback inhibition
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pituitary gland
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anterior pituitary
tropic hormones
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gonadotropic hormones
luetinizing hormone
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in females triggers ovulation and promotes synthesis and release of ovarian hormones, and helps an egg containing ovarian fillicle to mature
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Stimulated: GRH produced by the hypothalamus and gonadotropic cells of a. pituitary
inhibited: negative feedback of gonadal hormones
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growth hormone
stimulates somatic growth, mobilizes fat, and spares glucose
stimulated by GHRH release inhibited by feedback inhibition exerted by GH and IGFs, and by hyperglycemia, obesity, and emotional depravation via either increase GHIH or decreased GHRH
prolactin
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stimulated:decrase in PIH release, birthcontrol pills, breast feedingm and dopamine blocking drugs
inhibited: PIH
pancreas
alpha cells
glucagon
raises blood glucose levels (promotes breakdown of glycogen to glucose, synthesis of glucose from lactic acid and noncarbohydrate molecules, release of glucose by liver cells
Stimulated: falling blood glucose, sympathetic nervous system, increased amini acid levels
inhibited: increased glucose levles, insulin, somatostatin
beta cells
insulin
lowers blood glucose (enhances membrane transport of glucose into cells, inhibits glycogen breakdown, inibits aminoacid and fat conversion), promotes protein synthesis and fat storage, neural development, feeding behavior, and learning + memory
Stimulated: high blood glucose, increased amino acid and fatty acid blood levels, acetylcholine release, hyperglycemic hormone
Inhibited: somatostatin and sympathetic nervous system release
parathyroid gland
parathyroid hormone
stimulates the skeleton, kidneys, and intestion to increase Ca2+ levels in blood
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pineal gland
melatonin
regulates sleep/wake cycle, production of protective antioxidants + detoxificatoin molecules within cells
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hpothalamus
lots of inhibiting and releasing hormones that stimulate the a. pituitary to release or stop releasing random assorted hormones
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