Renal 3

What is not true of glomerular filtrate?

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

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

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


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

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

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


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

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

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


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

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

Which is not characteristic of the collecting duct?
It is entirely impermeable to urea
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



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