ANATOMY

Detailed explanation-1: -Common causes of thirst You will usually feel thirsty because you’re not drinking the amount of fluid your body needs. This may be because you’ve been sweating heavily or you’ve lost fluid because you have diarrhoea and are vomiting.

Detailed explanation-2: -Thirst is a subjective perception that provides the urge for humans and animals to drink fluids. It is a component of the regulatory mechanisms that maintain body fluid homeostasis and ultimately is essential for survival.

Detailed explanation-3: -Thirst has long been thought of as a negative homeostatic feedback response to increases in blood solute concentration or decreases in blood volume. However, emerging evidence suggests a clear role for thirst as a feedforward adaptive anticipatory response that precedes physiological challenges.

Detailed explanation-4: -Hypertonicity: Cellular dehydration acts via an osmoreceptor mechanism in the hypothalamus. Hypovolaemia: Low volume is sensed via the low pressure baroreceptorsin the great veins and right atrium. Hypotension: The high pressure baroreceptors in carotid sinus & aorta provide the sensors for this input. More items •05-Jun-2019