How does Na+ reabsorption occur? Which two hormones are involved?
How does Na+ reabsorption occur? Which two hormones are involved?
The reabsorption refers to the phenomenon in which nephrons functions in removing water and solutes from the fluid of tubules and move it back to the blood circulation. This process is crucial for maintaining fluid balance in the body.
Sodium reabsorption is the process which occurs in the nephron of the kidney. It is regulated by sodium-potassium ATPase present in the basolateral membrane. The most of reabsorption occurs within the proximal tubule of the kidney. The sodium is reabsorbed into the epithelial cell's cytoplasm by diffusion or using ionic channels either by water or chloride or by glucose and amino acids as a co-transporter. The hormones that are responsible for regulating the sodium reabsorption is aldosterone and antidiuretic hormone. The aldosterone causes the water and sodium-ion reabsorption to increase blood pressure and volume. The antidiuretic hormone causes sodium reabsorption for maintaining the osmolarity.
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