Urea will enter the

1. Thin segment of AL of LOH

2. Thick segment of AL of LOH

3. Descending Limb of LOH

4. All of these

How many times can human urine be concentrated in counter current mechanism?

1. Four times

2. Five times

3. Three times

4. Two times

Counter current mechanism helps in maintenance of

1. Concentration gradient in the medullary interstitium.

2. Concentration gradient in the cortical interstitium

3. Concentration gradient in the lumen of collecting duct

4. Concentration gradient in the lumen of DCT

Kidneys is efficiently monitored and regulated by hormonal feedback mechanisms which does not involve
A. Hypothalamus
B. JGA
C. Heart
D. Liver

Osmoreceptors in the body are not activated by

Hypothalamus is stimulated by osmoreceptors and make the neurohypophysis  to release

ADH facilitates water reabsoption and

ADH has no effects over

ADH cannot cause

The JG cells are activated by