In which of the mentioned segments of a nephron, Na+ reabsorption primarily occurs by the Na+-H+ exchange?
Correct Answer: PCT
Description: In the PCT, the apical membrane has Na+/H+-antipoer, which couples H+ secretion with the Na+ movement across the apical membrane. In the TAL of loop of Henle:- The sympoer NKCC moves 1 Na+, 1 K+, 2 Cl- through the apical membrane into the cell. In DCT:- The sympoer is NCC. In the late distal tubule and collecting duct:- Na+diffuses across the apical membrane through the epithelial Na+ channel (ENaC).
Category:
Physiology
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now