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Level 58

CVRR 58 Renal Blood Flow and GFR


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Gluconeogenesis
A function of the kidney in times of fasting
Electrolytes, body fluids, excretion
Functions of the kidney. [_______], [_______], [_______], conservation and hormones
Conservation and hormones
Functions of the kidney. Electrolytes, body fluid, excretion, [_______] and [_______]
Erythropoietin
A hormone that regulates red blood cell production
Kidneys
The organ that produces erythropoietin
Renin
A hormone that acts as an enzyme to break down angiotensinogen secreted from the liver into the peptide angiotensin I
Kidneys
The organ that produces renin
1,25-dihydroxy vitamin D3
A hormone that is involved in regulating calcium balance
Kidneys
The organ that produces 1,25-dihydroxy vitamin D3
99%
Roughly [__]% of what's filtered out of the kidney is reabsorbed daily
180L
The amount of water filtered by the kidneys per day, in L
1.5L
The amount of water excreted by the kidneys per day, in L
25%
At least [__]% of the cardiac output is delivered to the kidneys
90%, 10%
[__]% of renal blood flow is involved in urine formation. The other [__]% supplies the kidney tissue itself
Renal veins
Blood is drained from the kidneys via the [_______]
Nephron
The main functional unit of the kidney, comprising the renal tubule, glomerulus and renal corpuscle (glomerulus and Bowman's capsule)
Cortical or superficial nephron
A type of nephron where the glomerulus is superficial in the cortex and the loop of Henle does not penetrate deep
Juxtamedullary nephron
A type of nephron where the glomerulus is near the medulla and the loop of Henle penetrates deep
Afferent
Blood enters the glomerulus via the [______] arteriole
15-20%
When blood enters the leaky glomerular capillaries, approximately [__-__]% of plasma is forced out
Efferent
Blood drains from the glomerulus via the [______] arteriole
Ultrafiltrate
Once plasma has been squeezed out into the nephron it is called [______]
Podocytes
Cells that wrap around the glomerular capillaries, helping to create a filter
50x
Glomerular capillaries are approximately [__]x more permeable than skeletal muscle capillaries