Which part of the nephron is impermeable to water?

Proximal convoluted tubule

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Distal convoluted tubule

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Ascending limb of loop of Henle

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Descending limb of loop of Henle

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Solution

The correct option is C Ascending limb of loop of Henle
Ascending limb of loop of Henle is impermeable to water. Here water is not reabsorbed, rather sodium, potassium, magnesium and chloride are reabsorbed and therefore the filtrate becomes hypotonic to blood plasma.

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Similar questions

Maximum amount of water from the glomerular filtrate is reabsorbed in

(a) proximal convoluted tubule

(b) descending limbs of loop of Henle.

(d) distal convoluted tubule.

	List I (Part of nephron)		List II (Function)
A	Proximal convoluted tubule	I	Impermeable to sodium ions
B	Distal convoluted tubule	II	Impermeable to water
C	Dsecending limb of Henle's loop	III	Facultative reabsorption of water $N a^{+}$
D	Asecending limb of Henle's loop	IV	Reabsorption of nutrients and $N a^{+}$

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