Give a brief account of the counter curr | Class 11 Biology Chapter Excretory products and their Elimination, Excretory products and their Elimination NCERT Solutions

Q4. Give a brief account of the counter current mechanism.

The counter current mechanism operating inside the kidney is the main adaptation for the conservation of water. There are two counter current mechanisms inside the kidneys. They are Henle’s loop and vasa rectae.

Henle’s loop is a U-shaped part of the nephron. Blood flows in the two limbs of the tube in opposite directions and this gives rise to counter currents. The Vasa recta is an efferent arteriole, which forms a capillary network around the tubules inside the renal medulla. It runs parallel to Henley’s loop and is U-shaped. Blood flows in opposite directions in the two limbs of vasa recta. As a result, blood entering the renal medulla in the descending limb comes in close contact with the outgoing blood in the ascending limb.

Vasa Recaae & Henle's Loop

The osmolarity increases from 300 mOsmolL -1 in the cortex to 1200 mOsmolL -1 in the inner medulla by counter current mechanism. It helps in maintaining the concentration gradient, which in turn helps in easy movement of water from collecting tubules. The gradient is a result of the movement of NaCl and urea.

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This question is important because it tests key concepts from the NCERT syllabus and is frequently asked in CBSE exams.

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What is the correct answer to: Give a brief account of the counter current mechanism.?

The counter current mechanism operating inside the kidney is the main adaptation for the conservation of water. There are two counter current mechanisms inside the kidneys. They are Henle’s loop and vasa rectae.

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How do you solve Give a brief account of the counter current mechanism. step by step?

Step-by-step explanation:
• The counter current mechanism operating inside the kidney is the main adaptation for the conservation of water
• There are two counter current mechanisms inside the kidneys
• They are Henle’s loop and vasa rectae

What common mistakes should be avoided in this question?

Students often lose marks by skipping steps, writing incomplete explanations, or misunderstanding keywords used in the question.

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Student Discussion

Shafi
Class · · , · Feb 11, 2019
Thnx
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Vani
Class · · , · Feb 10, 2019
Tq
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Vaishnavi
Class · · , · Jan 29, 2019
Apt answer for the question . Thank you.😊
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vidd
Class · · , · Jan 02, 2019
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Class · · , · Dec 04, 2018
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Class · · , · Nov 02, 2018
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Class · · , · Jul 27, 2018
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Amal
Class · · , · Mar 15, 2018
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Tiffany
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Anisha
Class · · , · Feb 11, 2018
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