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The lines marked in the image in the brackets are taken from the NCERT book for biology class XI. In these lines it is given that the descending Limb of the loop of Henle is permeable to water but almost impermeable to electrolytes so according to this shouldn`t the filtrate be diluted but here it is given that the filtrate concentrates as it moves down. please help me to get rid of the situation.

The lines marked in the image in the brackets are taken from the NCERT book for biology class XI. In these lines it is given that the descending Limb of the loop of Henle is permeable to water but almost impermeable to electrolytes so according to this shouldn`t the filtrate be diluted but here it is given that the filtrate concentrates as it moves down. please help me to get rid of the situation.

Question Image
Grade:11

1 Answers

Dr.Adam Shaik
askIITians Faculty 387 Points
4 years ago
Hai Navdeep Dhingra,
Good Question Many students gets this doubt.
The statement is correct.
The water is permeable (going out of Descending limb) to move into the blood capillaries due to which water quantity decreases ( becomes concentrated).

Please see the Image attached and The arrow mark sign in the red circles for better understanding.
Co-relate the sentences with diagram also dear
Diagram is given in page-295 of Your NCERT text book

519-928_Nephron.jpg

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