NEETZoologyExcretory Products and their Elimination
What is the average amount of blood filtered by the kidneys per minute?
Options
- A1000 ml
- B1100-1200 ml
- C900-1000 ml
- D800-900 ml
Correct answer
B. 1100-1200 ml
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 these