Question

The net pressure gradient that causes the fluid to filter out of the glomeruli in the capsule is
A. 20mm Hg
B. 75mm Hg
C. 30mm Hg
D. 50mm Hg

Answer 1

Hint: The kidney plays an important role in urine formation, nephron is the structural and functional unit of the kidney, in the nephron, glomerular filtration takes place in the glomerulus, and the filtered plasma again enters into the capsule, for the further filtration.

Complete answer:
As we know that urine formation is taking place in the kidneys, most of the food that we fed to our is metabolized and produce energy, and at the same time, waste products release, the solid waste products are eliminated through feces, while the water-soluble wastes are eliminated through urine.
So urine formation is taking place in the kidney, and the kidney contains the nephron, and each nephron in turn consists of the bowman's capsule and tubular portion, inside the bowman's capsule, the tuft of capillaries found and form the glomerulus.
Filtration of blood daily takes place in the glomerulus, daily 1.5 liter of blood is filtered per minute in the kidneys and the blood to be filtered usually has two components, blood cells, and plasma, so most of the waste products are present in the plasma and the plasma is filtered.
The capillaries of the glomerulus, contains micro sieves in their endothelium in order to filter the particles, and the blood that should be filtered is passed through capillaries under pressure and there is hydrostatic pressure obtained in the capsule due to filtered plasma and also there is a hydrostatic pressure of glomerulus and the net pressure gradient which is about the 10 to 15 mm of Hg.

So the answer which is near to that is option A.

Note:
The simple method to understand the net pressure gradient in the glomerulus is by a simple formula
Glomerular filtration pressure = glomerular hydrostatic pressure - bowman's capsule hydrostatic pressure + glomerular capillary osmotic pressure.