Urinalysis and Body Fluids 6th Edition by Majorie DiLorenzo, Susan Strasinger

Exercise 12

Filtration of protein is prevented in the glomerulus by:

A. Hydrostatic pressure

B. Oncotic pressure

C. Renin

D. The glomerular filtration barrier

Step 1 of 2

Glomerulus:

Glomerulus is the mesh of capillaries present in the nephron at the beginning

• The first stage of filtration of blood occurs in the glomerulus.

• The glomerulus filters the plasma of blood and functions as the barrier.

o Larger molecules cannot be passed through glomerulus.

o It allows only tiny molecules.

• The glomerulus has basement membrane which does not allow plasma proteins.

o As it does not allow protein to pass through the protein are retained in the blood itself.

o Proteins are not wasted in urine.

Therefore, “the glomerular filtration barrier” prevents the filtration of protein in the glomerulus. Hence the correct answer is option.