Renal Flashcards
1
Q
What is the osmolality at the tips of the papillae?
A
It can reach about 1200 mOsm/kg of H20, approximately four times that of plasma
2
Q
What is the diameter of the glomerulus?
A
200 microm in diameter
3
Q
Which arteriole is larger - afferent or efferent?
A
Afferent
4
Q
What is the total area of glomerular capillary endothelium across which filtration occurs?
A
0.8m2
5
Q
What is the length and diameter of the PCT?
A
Length 15 mm
Diameter 55 microm
6
Q
What are the two types of nephrons?
A
Cortical nephrons - glomeruli in the outer portions of the renal cortex with short loops of Henle
Juxtamedullary nephrons - glomeruli in the juxtamedullary region of the cortex with long loops extending down to the medullary pyramids. This accounts for 15% of nephrons.
