Question

How does vasopressin cause the reduction of water loss through urine?

Answer 1

Vasopressin:

1. Vasopressin, also known as antidiuretic hormone, is a hormone that is essential for preserving osmolality (the level of dissolved particles in the serum, such as salts and glucose), which in turn preserves the amount of water in the extracellular fluid (the fluid space that surrounds cells).
2. This is required to safeguard cells from abrupt changes in water content, which have the potential to impair normal cell operation.
3. The antidiuretic hormone vasopressin, which also controls water retention, is closely related to serum osmolality, or the number of dissolved solutes in the blood.
4. Vasopressin operates on the kidneys, causing the distal tubules to reabsorb water and electrolytes, which reduces the amount of water lost during urination.