Kidneys Flashcards
which artery supplies the kidneys
Renal Artery
which vein supplies the kidneys
Renal vein
what is osmoregulation
homeostatic control of blood water potential
what are the sections of the kidneys
Capsule
Cortex
Medulla
Pelvis
what takes the waste product from the kidneys to the bladder
Ureter
what is the filtering unit of the kidney?
the Nephron
Name the different sections of the nephron
Glomerulus (inside the Bowman's Capsule proximal convoluted tubule Loop of Henle distal convoluted tubule collecting duct
how do the kidneys maintain a higher blood pressure than the rest of the body
afferent arterioles are wider then efferent
what processes do the kidneys do?
ultrafiltration
selective reabsorption
excretion
what is the function of the glomerulus
Ultrafiltration
describe the process of ultrafiltration?
- Blood enters the kidneys through the renal artery
- high blood pressure (caused by the afferent arterioles being wider than the efferent arterioles) forces liquid and dissolved solutes out of the blood
- tissue fluid collects in the Bowman’s Capsule
What is the glomerulus
a network of capillaries within the Bowman’s Capsule
what layers does the filtrate need to pass through to leave the blood and enter the Bowman’s Capsule
Endothelium (single cell layer of the capillaries)
Basement membrane- (glycoprotein and collagen mesh)
Podocyte layer- foot like projections that fit together with a gap
where does selective reabsorption happen
in the proximal and distal convoluted tubules
what percentage of reabsorption happens in the PCT
80%