Question

Which part of the nephron is primarily responsible for filtration of blood?

• A. Loop of Henle
• B. Proximal convoluted tubule
• C. Bowman's capsule
• D. Collecting duct

Hint:

Bowman's capsule = Blood filtration. It is the first step in urine formation!

Answer 1

The Correct Option is C

To address the problem, we must identify the nephron segment responsible for the initial blood filtration.

1. Nephron Fundamentals:

- The nephron serves as the kidney's fundamental functional unit.
- Its functions include blood filtration, waste removal, and urine production.
- Each nephron comprises multiple distinct functional components.

2. Nephron Components for Filtration:

- Bowman's Capsule (Glomerular Capsule): This is a sac-like structure encasing the glomerulus.
- Glomerulus: This is a cluster of small blood capillaries situated within Bowman's capsule.
- The glomerulus and Bowman's capsule collectively constitute the renal corpuscle.

3. The Primary Filtration Mechanism:

- Blood enters the glomerulus under elevated pressure.
- Fluids and small solutes, including water, salts, glucose, and waste products, are filtered from the blood across the glomerular capillary walls into Bowman's capsule.
- Larger molecules, such as proteins and blood cells, are retained within the blood.
- This filtered fluid, termed glomerular filtrate, subsequently traverses the remainder of the nephron.

Conclusion:

The principal site of blood filtration within the nephron is the glomerulus, located within Bowman's capsule.