If the osmotic pressure in the glomerular capillaries increased from 28 mmhg to 35 mmhg due to dehydration, would net filtration increase or decrease?

a. net filtration would increase.
b. net filtration would decrease.
c. net filtration would not be altered.

Net filtration would decrease.

Explanation:

Net filtration pressure may be defined as the pressure present at the glomerulus. The net filtration pressure is the outward pressure minus the inward pressure existing at the kidney.

The net filtration pressure is affected by the osmotic pressure as well. The osmotic pressure always opposed the filtration. This might result in the increase in osmotic pressure. This will ultimately decrease the net filtration pressure as both oppose each other.

Thus, the correct answer is option (b).