Question

Generally, most water reabsorption in a nephron occurs at the:_________

1. nephron loop and is called obligatory water reabsorption.
2. nephron loop and is called facultative water reabsorption.
3. proximal convoluted tubule and is called obligatory water reabsorption.
4. proximal convoluted tubule and is called facultative water reabsorption.

Answer 1

The correct answer is 3. proximal convoluted tubule and is called obligatory water reabsorption.

Step-by-step explanation:

The correct answer is 3. proximal convoluted tubule and is called obligatory water reabsorption. Reabsorption of water occurs mainly in the proximal convoluted tubule (PCT) of the nephron. The PCT is lined with cells that actively transport ions and create a high concentration of mitochondria in order to produce ATP for the reabsorption process.