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In the following question, a statement of Assertion(A) is given followed by a corresponding statement of Reason(R).
Read the statements carefully, and mark the correct answer.
Assertion(A): In the descending limb of loop of Henle, the urnie is hypertonic, while in ascending limb of loops of Henle, the urine is hypotonic.
Reason(R): Descending limb is impermeable to Na+, while ascending limb is impermeable to H2O.
  • a)
    Both assertion and reason are true and reason is the correct explanation of assertion.
  • b)
    Both assertion and reason are true but reason is not the correct explanation of assertion.
  • c)
    Assertion is true but reason is false.
  • d)
    Both assertion and reason are false.
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
In the following question, a statement of Assertion(A) is given follow...
The loop of Henle, also called the nephron loop, is a U-shaped tube that extends from the proximal tubule. It consists of a descending limb and ascending limb.The descending limb is permeable to water and noticeably less impermeable to salt, and thus only indirectly contributes to the concentration of the interstitium. As the filtrate descends deeper into the hypertonic interstitium of the renal medulla, water flows freely out of the descending limb by osmosis until the tonicity of the filtrate and interstitium equilibrate. Longer descending limbs allow more time for water to flow out of the filtrate, so longer limbs make the filtrate more hypertonic than shorter limbs.Unlike the descending limb, the ascending limb of Henle's loop is impermeable to water, a critical feature of the countercurrent exchange mechanism employed by the loop. The ascending limb actively pumps sodium out of the filtrate, generating the hypertonic interstitium that drives countercurrent exchange. In passing through the ascending limb, the filtrate grows hypotonic since it has lost much of its sodium content. This hypotonic filtrate is passed to the distal convoluted tubule in the renal cortex.
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Most Upvoted Answer
In the following question, a statement of Assertion(A) is given follow...
Explanation:

Descending Limb of Loop of Henle:
- The descending limb of the loop of Henle is permeable to water but impermeable to solutes such as Na+.
- As a result, water moves out of the descending limb due to the high osmolarity of the interstitium, making the urine hypertonic.

Ascending Limb of Loop of Henle:
- The ascending limb of the loop of Henle is impermeable to water but permeable to solutes.
- As Na+ and Cl- are actively pumped out of the ascending limb, the interstitium becomes hypotonic, resulting in the formation of hypotonic urine.

Combining Assertion and Reason:
- The assertion correctly states that the urine in the descending limb is hypertonic, while in the ascending limb, it is hypotonic.
- The reason provided explains this phenomenon by highlighting the permeability characteristics of each limb.

Conclusion:
- Therefore, both the assertion and reason are true, and the reason is the correct explanation of the assertion.
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Community Answer
In the following question, a statement of Assertion(A) is given follow...
Correct anwser is a
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In the following question, a statement of Assertion(A) is given followed by a corresponding statement of Reason(R).Read the statements carefully, and mark the correct answer.Assertion(A): In the descending limb of loop of Henle, the urnie is hypertonic, while in ascending limb of loops of Henle, the urine is hypotonic.Reason(R): Descending limb is impermeable to Na+, while ascending limb is impermeable to H2O.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Both assertion and reason are false.Correct answer is option 'A'. Can you explain this answer?
Question Description
In the following question, a statement of Assertion(A) is given followed by a corresponding statement of Reason(R).Read the statements carefully, and mark the correct answer.Assertion(A): In the descending limb of loop of Henle, the urnie is hypertonic, while in ascending limb of loops of Henle, the urine is hypotonic.Reason(R): Descending limb is impermeable to Na+, while ascending limb is impermeable to H2O.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Both assertion and reason are false.Correct answer is option 'A'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about In the following question, a statement of Assertion(A) is given followed by a corresponding statement of Reason(R).Read the statements carefully, and mark the correct answer.Assertion(A): In the descending limb of loop of Henle, the urnie is hypertonic, while in ascending limb of loops of Henle, the urine is hypotonic.Reason(R): Descending limb is impermeable to Na+, while ascending limb is impermeable to H2O.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Both assertion and reason are false.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In the following question, a statement of Assertion(A) is given followed by a corresponding statement of Reason(R).Read the statements carefully, and mark the correct answer.Assertion(A): In the descending limb of loop of Henle, the urnie is hypertonic, while in ascending limb of loops of Henle, the urine is hypotonic.Reason(R): Descending limb is impermeable to Na+, while ascending limb is impermeable to H2O.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Both assertion and reason are false.Correct answer is option 'A'. Can you explain this answer?.
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