Endocrine System Flashcards
endocrine glands function
make, store, and release hormones into the bloodstream to coordinate and integrate the activity of the body
8 main glands
pituitary gland, thyroid gland, adrenal gland, pancreas, testes, ovaries, pineal gland, parathyroid gland
pituitary gland divided into
anterior lobe and posterior lobe
anterior lobe of pituitary gland made up of
chromophils
chromophils divided into
acidophils and basophils
basophils are
tropic
acidophils are
non-tropic
tropic hormones function
regulate the secretory actions of other endocrine glands
basophils produce
thyroid stimulating hormone, follicle stimulating hormone, luteinizing hormone, and adrenocorticotropic hormone
TSH
thyroid stimulating hormone
FSH
follicle stimulating hormone
LH
luteinizing hormone
ACTH
adrenocorticotropic hormone
thyroid stimulating hormone function
stimulates the secretion of thyroid hormones
follicle stimulating hormone function
in females, triggers ovulation and stimulates ovarian production of estrogen and progesterone; in males, stimulates testosterone production
adrenocorticotropic hormone function
stimulates the release of glucocorticoids and androgens
acidophils produce
growth hormone and prolactin
GH
growth hormone
PRL
prolactin
growth hormone function
stimulates body growth and protein synthesis, mobilizes fat and conserves glucose
prolactin function
stimulates lactation
difference between hormones of anterior pituitary gland and posterior pituitary gland
posterior pituitary gland hormones are produced by the hypothalamus and stored in the posterior pituitary
posterior pituitary gland produces
oxytocin and antidiuretic hormone
ADH
antidiuretic hormone
antidiuretic hormone function
stimulates the kidneys to reabsorb more water, reducing urine output and conserving body water
oxytocin function
stimulates powerful uterine contractions during birth, and stimulates milk ejection in lactating mothers
thyroid gland produces
thyroxine, triiodothyronine, and calcitonin
T4
thyroxine
T3
triiodothyronine
T3 and T4 function
increases basal metabolic rate; regulates tissue growth and development
calcitonin function
decreases calcium levels in the blood
adrenal gland divided into
adrenal cortex and adrenal medulla
adrenal cortex contains
zona glomerulosa, zona fasciculata, and zona reticularis
adrenal medulla produces
epinephrine and norepinephrine
zona glomerulosa produces
mineralocorticoids, mostly aldosterone
zona fasciculata produces
glucocorticoids, mostly cortisol
zona reticularis produces
estrogen, progesterone, testosterone
mineralocorticoid (aldosterone) function
increases reabsorption of sodium and water by the kidney tubules, increases secretion of potassium in urine
glucocorticoid (cortisol) function
promotes the breakdown of fat and protein, promotes stress resistance, inhibits the immune response
estrogen function
promotes the maturation of the female reproductive organs and the development of secondary sex characteristics
progesterone function
regulates menstruation and supports pregnancy
testosterone function
promotes the maturation of the male reproductive organs, the development of secondary sex characteristics, sperm production, sex drive
pancreas is made up of
islets of langerhans
islets of langerhans are made up of
alpha cells and beta cells
alpha cells produce
glucagon
beta cells produce
insulin
glucagon function
accelerates the breakdown of glycogen to glucose, stimulates the conversion of lactic acid into glucose, releases glucose into the blood from the liver
insulin function
accelerates the transport of glucose into body cells; promotes glycogen, fat, and protein synthesis
testes produce
testosterone and inhibin
inhibin function
regulates sperm production