Single Choice

Which part of the nephron is impermeable to water?

AProximal convoluted tubule
BDistal convoluted tubule
CAscending limb of loop of Henle
Correct Answer
DDescending limb of loop of Henle

Solution

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.

SIMILAR QUESTIONS

Animal Physiology: Circulation and Excretion

There is increase in blood urea when there is insufficient filtration in

Animal Physiology: Circulation and Excretion

A loop of capillary running parallel to the Henle's loop is known as

Animal Physiology: Circulation and Excretion

Compare the functioning of alveoli in the lungs and nephrons in the kidneys with respect to their structure and functioning.

Animal Physiology: Circulation and Excretion

Mark the wrong match from the following:

Animal Physiology: Circulation and Excretion

The bunch of capillaries present in the Bowman's capsule are called

Animal Physiology: Circulation and Excretion

Which of the following statements is correct?

Animal Physiology: Circulation and Excretion

All Bowman's capsules of the kidney are found in

Animal Physiology: Circulation and Excretion

Statement 1: Small amount of urea enters the thick segment of Henle's loop which is transported back to interstitium by collecting tubules. Statement 2: Collecting tubules and the thick segment of Henle's loop are permeable to urea.

Animal Physiology: Circulation and Excretion

Select the correct statement.

Animal Physiology: Circulation and Excretion

Read the given statements regarding the human excretory system and select the correct ones. (i) Presence of glucose in urine is known as uremia. (ii) Distal convoluted tubule (DCT) selectively secretes hydrogen ions, ammonia and potassium ions into the filtrate. (iii) Macula densa formed bye cellular modifications in the distal convoluted tubule and the afferent arteriole at their contact location. (iv) Atrial natriuretic factor (ANF) can cause vasoconstriction when blood flow is low to the atria of the heart.

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