NEETZoologyExcretory Products and their Elimination
What is the role of the glomerulus in the filtration of blood during urine formation?
Options
- ATo absorb substances from the blood
- BTo secrete substances into the blood
- CTo cause filtration of blood through the filtration membranes
- DTo transport substances from the Bowman's capsule lumen to the renal tubule
Correct answer
C. To cause filtration of blood through the filtration membranes
Step-by-step solution
: The first step in urine formation is the filtration of blood, which is carried out by the glomerulus and is called glomerular filtration. On an average, 1100-1200 ml of blood is filtered by the kidneys per minute which constitute roughly 1/5th of the blood pumped out by each ventricle of the heart in a minute. The glomerular capillary blood pressure causes filtration of blood through 3 layers, i.e., the endothelium of glomerular blood vessels, the epithelium of Bowman’s capsule and a basement membrane between the