Question

Most numbers of nephrons are located within renal

• A. Medulla
• B. Calyces
• C. Cortex
• D. Pelvis

Hint:

All filtration units (glomeruli) are situated within the renal cortex. Therefore, the cortex is the principal zone for glomerular filtration in the kidney.

Answer 1

The Correct Option is C

Step 1: Understanding the Concept:
Nephrons are categorized into two major populations based on the location of their renal corpuscles and the depth of their loops of Henle: Cortical nephrons and Juxtamedullary nephrons.

Step 3: Detailed Explanation:
- Cortical Nephrons: Represent roughly 80--85% of all nephrons in the mammalian kidney. Their glomeruli, Bowman's capsules, proximal convoluted tubules, and distal convoluted tubules are located in the outer renal cortex.
- Juxtamedullary Nephrons: Represent the remaining 15--20% of nephrons, with glomeruli located close to the corticomedullary junction and loops of Henle extending deep into the medulla.
Because the vast majority of nephrons are cortical, and all glomeruli are located within the cortex, the bulk of nephron structures reside in this region.

Step 4: Final Answer
The highest concentration of nephron structures is located within the renal cortex.