Question

Explain selective reabsorption

Answer 1

1. Selective reabsorption is the reabsorption of solute and water from the nephric filtrate or the primary urine.
2. It reabsorbs
3. 65% of the filtrated sodium, chlorine, bicarbonate, and potassium.
4. Essentially all glucose and amino acids.
5. 75% of water
6. LOCATION: It occurs in the proximal convoluted tubules and distal region of tubules.

MECHANISM:

1. Useful substances are reabsorbed through active and passive processes and passed to peritubular capillaries.
2. Solute reabsorption creates an osmotic gradient in the proximal convoluted tubule, promoting water reabsorption via osmosis.