Renal Conentrating Mechanisms

Question 0

Osmolarity

Answer 0

Number of particles in 1litre of water

Question 1

Osmolality

Answer 1

Number of solute particles in 1kg of water

Question 2

Concentration of interstitium

Answer 2

Reabsorption of salts from ascending limb
Secretion of salts from ascending vasa recta ad absorption of water
Secretion of water and reabsorption of salts from descending vasa recta
Reabsorption of water from descending limb

Question 3

Osmoregulation

Answer 3

Baroreceptors-> detect decrease in BP->posterior pit. neurohypophysis-> ADH-> splanchnic vasoconstriction, increased DT/CD H20 permeability
Osmoreceptors-> detect decrease in osmolality-> same as above and thirst