1. What does the diagram represent? 2. Name the parts A, B, C, D. 3.

1.	1. What does the diagram represent? 2. Name the parts A, B, C, D. 3. What is the physiological function taking place in part ‘B.
Answer» 1. Nephron 2. The parts are A – Bowman’s capsule B – Henle’s loop C – Proximal convoluted tubule D – Collecting duct 3. Henle’s loop is the site of osmoregulation in human kidney. The descending limb of loop of Henle is permeable to water but almost impermeable to electrolytes. The ascending limb is impermeable to water but allows transport of electrolyte actively or passively. Therefore, as the concentrated filtrate pass upward, it gets diluted due to the passage of electrolytes to the medullary fluid.

1. What does the diagram represent? 2. Name the parts A, B, C, D. 3. What is the physiological function taking place in part ‘B.

Answer»

1. Nephron

2. The parts are

A – Bowman’s capsule
B – Henle’s loop
C – Proximal convoluted tubule
D – Collecting duct

3. Henle’s loop is the site of osmoregulation in human kidney. The descending limb of loop of Henle is permeable to water but almost impermeable to electrolytes. The ascending limb is impermeable to water but allows transport of electrolyte actively or passively.

Therefore, as the concentrated filtrate pass upward, it gets diluted due to the passage of electrolytes to the medullary fluid.

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1. What does the diagram represent? 2. Name the parts A, B, C, D. 3. What is the physiological function taking place in part ‘B.

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