Renal 3

What is not true of glomerular filtrate?

It is conceptually the same as tea
It lacks large proteins and cells
it is produced at a rate of 125ml per minute (approximately)
It has the same osmotic pressure as plasma

Which factor does not contribute to the ability of the glomerulus to filter blood
the leaky nature of the glomerular endothelium
Ability of filtrate to leave the capsule
Having both afferent and efferent arterioles
Smooth muscle cells within the capillaries

What does not increase glomerular filtration rate
Increased glomerular surface area
afferent arteriole vasoconstriction
efferent arteriole constriction
Increased blood pressure


What does not contribute to net filtration pressure
Glomerular hydrostatic pressure
Capsular hydrostatic pressure
Blood colloid osmotic pressure
Glomerular endothelial pressure

Which component of net filtration pressure is most moderated the body?
Blood colloid osmotic pressure
Glomerular hydrostatic pressure
Net filtration pressure
Capsular hydrostatic pressure

Which is not a regulatory feature of glomerular filtration?
Amount of energy available for active transport
Angiotensin II
Atrial Natriuretic Peptide
Anything affecting blood pressure


Which is not a re-absorbed by the proximal convoluted tubule?
~100% glucose
~ 100% proteins
~60% NaCl
~ 60% glomerular filtrate

Which is not a feature of the proximal convoluted tubule?
Water movement by osmosis
Na/K pump maintains osmotic gradient
A brush border towards the tubal lumen
Glucose is pumped into the interstitial fluid

What is not a disorder of the descending loop of Henle?
300 mOsmol/L average filtrate concentration
high water permeability
high urea permeability
high NaCl permeability


Which is not a function of the thick ascending loop of Henle?
Maintenance of medulla osmolality
Na+, K+ and Cl- active reabsorption
100 mOsmol/L leaving
Water reabsorption

The loops are an example of an ___ mechanism
Spontaneous depolarising
Proximal
Counter current
Negative feedback

Which is not characteristic of the collecting duct?
It solely determines the final concentration of urine
It contains aquaporin II in vesicles when ADH is low
It allows for movement of water by osmosis
It is entirely impermeable to urea



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