Question

The majority of the nephrons (approximately 85%) are ______________ nephrons, located primarily in the ______________.

a. Juxtamedullary; medulla
b. Cortical; medulla
c. Cortical; cortex
d. Juxtamedullary; cortex

Answer 1

The majority of nephrons are cortical nephrons, and they are primarily located in the renal cortex, making option c the correct answer.

Step-by-step explanation:

The majority of the nephrons (approximately 85%) are cortical nephrons, located primarily in the cortex. Nephrons are the functional unit of the kidney, involved in the filtration of blood and production of urine. Cortical nephrons have a short loop of Henle that does not extend beyond the cortex, whereas about 15% of nephrons, known as juxtamedullary nephrons, have long loops of Henle that extend deep into the medulla. Hence, the correct answer to the student's question is option c. Cortical; cortex.