Question

In a healthy individual, an average of __________ of blood is filtered by the kidneys per minute.

• A. 1000 mL
• B. 1100 - 1200 mL
• C. 125 mL
• D. 1500 mL

Answer 1

The correct option is B 1100 - 1200 mL

Urine formation involves three processes - ultrafiltration, reabsorption and secretion. The first step of ultrafiltration is carried out by glomerulus and is known as glomerular filtration. Blood carrying the wastes reaches the glomerulus and is filtered. The podocytes of Bowman’s capsule forms a membrane with slit pores. The slit pores are so minute that almost all the constituents of the plasma except the proteins pass onto the lumen of the Bowman’s capsule. In a healthy individual, an average of 1100-1200 ml of blood is filtered by the kidneys per minute.