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Urine Formation

Terms in this set (34)

renal corpuscle
...
renal tubule and collecting duct
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glomerular capsule
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afferent arteriole
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efferent artiole
...
peritubular capillaries
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filtration from blood plasma into nephron
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tubular reabsorption from fluid into blood
...
tubular secretion from blood into fluid
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urine (contains excreted substances)
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blood (contains reabsorbed substances)
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fluid in renal tubule
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3 basic processes of urine formation:
glomerular filtration, tubular reabsorption, tubular secretion
glomerular filtration
is movement under pressure, of plasma water and dissolved contents across the glomerular capillaries into the capsular space
tubular reabsorption
is the movement of water and solutes from the filtrate into the peritubular capillary
tubular secretion
is the movement of solutes from the peritubular capillary into the tubular fluid
slit membrane between pedicels
prevents filtration of medium-sized proteins
basal lamina of glomerulus
prevents filtration of larger proteins
filtration slit
fenestration of glomerular
prevents filtration of blood cells but allows all components of blood plasma to pass through
pedicel
podocyte of visceral layer
normal mean blood pressure
zone of autoregulation
mean arterial blood pressure (mm Hg)
glomerular filtration rate (L/day)
excreted
secreted
reabsorbed
afferent arteriole (blood movement)
100%
20%
efferent arteriole
80%
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