A countercurrent mechanism is in
A)the afferent and efferent arterioles.
B)the glomerulus and Bowman's capsule.
C)the proximal and distal convoluted tubules.
D)the loop of Henle only.
E)both the loop of Henle and the vasa recta.

Question

Quizplus · Accepted Answer

The countercurrent mechanism exists in both the loop of Henle and the vasa recta. In the loop of Henle, it refers to the flow of fluid in opposite directions, which creates a gradient and allows for the reabsorption of ions and water. In the vasa recta, it refers to the flow of blood in opposite directions, which creates a gradient and allows for the exchange of nutrients and waste products in the kidney tissue.

A Countercurrent Mechanism Is in