Lab 11: Kidney Flashcards
functions of kidney
urine formation
regulation of blood pressure regulation of blood volume
regulation of a/b balance
formation and release of hormones
describe blood flow in kidney
renal artery –> interlobular artery –> arcuate artery –> interlobular artery –> afferent arteriole –> glomerulus –> efferent arteriole
are collecting tubules part of nephron
NOOOO
describe cortex
notice outer layer or capsule of kidney
medullary rays visible
renal corpuscles in cortex
name parts of renal corpuscle
bowmans capsule
vascular pole
urinary pole
name and describe layers of bowmans capsule
parietal layer = outer, simple squamous epithelium
visceral layer = inner, made of podocytes (and pedicels - not visible)
describe vascular pole (of renal corpuscle)
where blood vessels enter
describe urinary pole (of renal corpuscle)
where glomerular filtrate exits via proximal convoluted tubule
name cortical tubules
PCT = proximal convoluted tubule
DCT = distal convoluted tubule
describe proximal convoluted tubule
darker staining
cells have striated appearance due to folding of PM around mitochondria
brush border due to microvilli (improves absorption)
central nuclei
cloudy lumen
describe distal convoluted tubule
cells are less acidophilic
apically located nucleus
relatively clean lumen
what is common for both PCT and DCT
cannot delineate lateral membranes
what are 2 layers of bowmans capsule separated by
bowmans space
between visceral and parietal layers
what are medullary rays
at center of each lobule = striated projections of medulla into cortex
name parts of medullary rays
collecting tubule
thick descending limb of loop of henle
thick ascending limb of loop of henle