NEET Biology question

During urine formation, which of the following processes creates a high osmotic pressure in the uriniferous tubule?

(A)Active Na⁺ absorption, followed by absorption of Cl⁻Correct
(B)Active Cl⁻ absorption, followed by absorption of Na⁺
(C)Active secretion of Cl⁻ followed by absorption into efferent renal arteriole
(D)Active secretion of Na⁺ and absorption of Cl⁻ into efferent renal arteriole

Answer: (A)

Solution

Sodium ions are actively transported out of the tubular fluid into the surrounding interstitium and peritubular capillaries, and chloride ions passively follow due to the electrical gradient this creates, with water

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Question ID VK-116475