Where Does Water Reabsorption Mainly Occur?

The proximal convoluted tubule is where a majority of reabsorption occurs. About 67 percent of the water, Na⁺, and K⁺ entering the nephron is reabsorbed in the proximal convoluted tubule and returned to the circulation.

Where does water reabsorption occur in the body?

Explanation: Reabsorption occurs in the kidney. The structural and functional unit of the kidney is the nephron as shown below. The nephron removes water and also other solutes from the tubular fluid (fluid that passes through the distal tubule) and returns them to the capillary network.

Where is most water reabsorbed?

Most water reabsorption takes place in the proximal convoluted tubules, part of the nephrons in the kidney. Water is reabsorbed by a process called osmosis; the diffusion of water from an area of high water potential to an area of low water potential through a partially permeable membrane.