adrenal glands and gonads Flashcards
where are the adrenal glands
superior to kidneys
how many separate gland structures are there
2
name the 2 separate gland structures
adrenal cortex and adrenal medulla
what % of the adrenal glands are adrenal cortex
85%
what % of the adrenal glands is adrenal medulla
15%
how many zones are in the cortex-3 steroid hormones
3
name the 3 zones in the cortex-3 steriod hormones
outer, middle, inner
what does the outer zone do
mineralocorticoids - mineral homeostasis
what does the middle zone do
glucocorticoids - glucose homeostasis
what does the inner zone do
androgens - steroid masculinizing hormones
what is the major form of mineralocorticoids
aldosterone
what does aldosterone do
regulate mineral and water balance by action on kidneys
stimulates Na reabsorption from urine to blood
stimulates excretion of K+ into urine
what do glucocorticoids do
increase heart rate of protein breakdown
stimulate liver formation of glucose
breakdown of triglycerides in adipose tissue
anti-inflammatory effect
depresses immune system
regulates negative feedback
what does high cortisol level do
suppresses the immune system
what does low cortisol do
allows uncontrolled immune system action
