Physiology 2 Flashcards
name the part of the kidney that has a granular appearance
renal cortex
name the part of the kidney that has a striped appearance
renal medulla
name the functional unit of the kidney
the nephron
filtration, reabsorption and secretion are the 3 functional mechanisms of what?
the nephron
the afferent arteriole drains into the __________ which then drains into a _________ arteriole then ____________ capillaries then venule then ____
the afferent arteriole drains into the GLOMERULUS which then drains into a EFFERENT arteriole then PERITUBULAR capillaries then venule then VEIN
fluid from the glomerulus drains into what?
bowmans capsule
state route of fluid from bowmans capsule
glomerulus bowman's capsule proximal tubule loop of henle distal tubule collecting duct to renal pelvis
the fluid is referred to urine at what point in the route?
collecting duct
name the 2 nephron types
cortical (80%) and juxamedullary (20%)
name the nephron:
gives rise to more to more concentrated urine
longer loop of Henle
single artery named the vasa recta
juxtamedullary
which arteriole has greater diameter?
afferent arteriole has greater diameter than efferent arteriole
name the special cell that makes up the inner layer of the bowmans capsule
podocytes
what is sandwiched between the endothelial cells and podocytes?
basement membrane or basal lamina
what is the juxtaglomerular apparatus?
part of the tubule that passes in-between the afferent and efferent arterioles
what cells produce and secrete renin?
granular cells
name the salt detectors of the juxtaglomerular apparatus
macula densa
tubular secretion goes from what to what?
peritubular capillary to kidney tubule
tubular reabsorption goes from what to what?
kidney tubule to peritubular capillary
what is the average GFR?
125ml/min
rate of filtration of X = ? x ?
rate of filtration of X = [X]plasma x GFR
rate of excretion of X = ? x ?
rate of excretion of X = [X]urine x Vu
Rate of reabsorption of X = ? - ?
Rate of reabsorption of X = rate of filtration of X – rate of excretion of X
If rate of filtration >/< rate of excretion, net reabsorption of that substance has occurred
If rate of filtration > rate of excretion, net reabsorption of that substance has occured
If rate of filtration >/< rate of excretion, net secretion of that substance has occurred
If rate of filtration < rate of excretion, net secretion of that substance has occurred
Rate of secretion of X = ? - ?
Rate of secretion of X = rate of excretion of X – rate of filtration of X
