MCQ
Given below are statements: one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: Nephrons are of two types: Cortical & Juxta medullary, based on their relative position in cortex and medulla.
Reason R: Juxta medullary nephrons have longer loop of Henle whereas, cortical nephrons have short loop of Henle.
Choose the correct answer from the options given below:
  • A
    A is false but R is true.
  • Both A and R are true and R is the correct explanation of A.
  • C
    Both A and R are true but R is NOT the correct explanation of A.
  • D
    A is true but R is false.

Answer

Correct option: B.
Both A and R are true and R is the correct explanation of A.
(B)
In majority of nephrons, the loop of Henle is too short and extends only very little into the medulla. Such nephrons are called cortical nephrons. In some of the nephrons, the loop of Henle is very long and runs deep into the medulla. These nephrons are called juxta medullary nephrons.

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