Because of which structure does very little albumin escape from the blood during glomerular filtration?

a. Fenestrated endothelium

b. Basement membrane

c. Filtration pore

d. Juxtaglomerular apparatus

e. Macula densa

The correct answer is option - B. basement membrane.

Explanation:

The basement membrane of the glomerular basement membrane or GBM is a thin ribbon-like extracellular matrix located in between the endothelium and podocyte foot processes.

Biochemical and genetic studies have proved that the GBM or basement membrane during glomerular filtration prevents the leakage of plasma proteins such as albumin into the urine. It plays a crucial role as permselective barrier.

Thus, the correct answer is option B. basement membrane.