Adrenal Glands Flashcards
(54 cards)
2 parts of adrenal glands
cortex medulla
cortex of adrenal gland develops from the ___
mesoderm
medulla of the adrenal gland develops from the
neural crest cells (neuroectoderm)
what develops first cortex or medulla for adrenal glands
cortex
cortex:
6 weeks: proliferation of mesoderm from _____
penetrates the ____, becomes _____
post abd wall
retroperitoneum
primitive adrenal cortex
cortex:
8 weeks: separates from _____ and is surrounded by ____
peritoneal surface
connective tissue (capsule)
after birth, the primitve adrenal cortex involutes and disappears by the age of ____
1
at ___ years of age, the adrenal cortex differentiates into ____ zones
3
3
medulla
7 weeks: neural crest cells migrate and invade the ____ side of the cortex
cells differentiate into the _____ of the adrenal medulla
medial
chromaffin cells
adrenal glands AKA
suprarenal glands
adrenal glands surrounded by (2)
perinephric fat
Gerota’s fascia
are adrenal glands fixed
yes
adrenal glands:
_____ length
_____ width
_____ AP
4-6cm
2-3cm
3-6mm
newborn kidneys are proportionately ____ (____ of kidney size)
larger
1/3
5 shapes of adrenal glands
pyramidal
semilunar (crescent)
V
Y
Z
left adrenal is slightly ____ than right
larger
R adrenal gland is ____ and _____ to IVC
post
lat
L adrenal gland has ____ portion ____ to panc and splenic vessels
inf
post
what 3 arteries supply adrenal glands and where does each artery come from
superior suprarenal arteries from the inferior phrenic arteries
middle suprarenal artery off aorta
inferior suprarenal artery off renal artery
right suprarenal vein drains into ___, left suprarenal vein drains into ___
IVC
LRV
cortex makes up ____ of adrenal glands
90%
cortex secretes _____ hormones (3 examples)
steroid
corticoids, glucocorticoids, gonadal hormones
are the adrenal glands essential for life
yes
cortex release controlled by a ____ feedback system
negative