In resting condition, the concentration gradient is maintained by

Movement against concentration gradient is called

How the counter current mechanism helps to maintain the concentration gradient in the medullary interstitium?

The counter current mechanism helps to maintain a concentration gradient. This gradient helps in -

Mention the substances that exit from the tubules in order to maintain a concentration gradient in the medullary interstitium.

Mention the substances that exit from the tubules in order to maintain a concentration gradient in the medullary interstitium.

....... may move across the membrane by the process of simple diffusion along the concentration gradient , from higher concentration to lower concentration.