Question

Difference between secretion and reabsorbtion?

Answer 1

Answer:

Explanation:Secretion and reabsorption are completely opposite processes

If we take the example in urine formation then Secretion is transfer of materials from Peritubular capillaries to the renal tubular lumen and the Reabsorption is completely opposite of this

Answer 2

Answer:

Tubular secretion is the transfer of materials from peritubular capillaries to the renal tubular lumen and occurs mainly by active transport and passive diffusion. It is the tubular secretion of H+ and NH4+ from the blood into the tubular fluid that helps to keep blood pH at its normal level.It helps in the maintenance of ionic and acibasse balance of the body fluids.

Reabsorption is the process which the volume of the filtrate formed per day with that of the urine released,suggest that almost 99% of the filtrate is reabsorbed by renal tubules.Reabsorption of water also occurs passively in the initial segment of nephron.