Thirst

Definition

Thirst is the sensation of needing to drink water due to a lack of hydration in the body. It is regulated by the brain's hypothalamus, which detects changes in fluid levels and triggers thirst signals.

Related terms

Hypothalamus:

A region in the brain responsible for regulating various bodily functions, including thirst.

Osmoreceptors: Specialized cells located in the hypothalamus that detect changes in blood osmolarity and trigger thirst.

Dehydration: A state of inadequate fluid levels in the body, which can lead to symptoms such as thirst, dry mouth, and dizziness.