Question

The mechanism of water reabsorption by the renal tubules is ________.

Answer 1

Water reabsorption in the renal tubules occurs through active transport and osmosis, regulated by hormones like ADH.

Step-by-step explanation:

Tubular reabsorption is the process by which water is reabsorbed from the renal tubules in the kidneys. Water reabsorption occurs mainly in the proximal convoluted tubule (PCT) and is regulated by various factors, including hormones like antidiuretic hormone (ADH). Sodium ions are actively transported out of the tubule, creating an osmotic gradient that causes water to follow and be reabsorbed into the peritubular capillaries. This mechanism helps maintain water balance in the body.

Answer 2

Answer: The correct answer is OSMOSIS.

Step-by-step explanation:

The option attached to this question are as follows:

A. Filtration.

B. Osmosis.

C. Active transport.

D. Co-transport with sodium ion.

Water re-absorption is the process by which water, which was lost during glomerular filtration re-enter the blood. The process typically occurs at the proximal convoluted tubule of the nephron. The process occurs by mean of osmosis, which is a form of passive transport. Re-abosorption usually occur based on the concentration gradients that exist in the convoluted tubule, movement takes place from the high concentration in the tubule to the low concentration in the blood capillaries that are surrounding the tubules.