L21-23 Osmoregulation

Question 1

difference between cortical and juxtamedullary nephron

Answer 1

Cortical nephrons have small glomerulus , short loop of Henle and produce dilute urine. ( peritubular capilaries) Juxtamedullary nephron have large glomerule, long loop of Henle and produce concentrated urine ( Vasa recta)

Question 2

What are mesangial cells?

Answer 2

control blood pressure and filtration within the glomerulus.

Question 3

which part of the nephron acts as the countercurrent multiplier?

Answer 3

Loop of Henle and collecting duct * to create an osmotic gradient that facilitates transport processes

Question 4

4 processes in urine Production

Answer 4

1. Filtration 2.Reabsorption 3. Secretion 4. Excretion