Thirst an ADH Flashcards
what is the primary regulator of water intake?
thirst
why do we get thirsty?
sometimes our bodies experience unanticipated decreases of blood volume or increases in osmolarity that alert the body to take corrective action (ex, when u eat salty food, the thirst mechanism prompts u to drink more)
what is the function of the ADH (vasopressin) mechanism?
ADH is made in the hypothalamus but STORED in the posterior pituitary
- ADH acts on the kidney tubules to retain water (antidiuretic) and increases blood volume and reduces serum osmolality
when the hypothalamus senses low blood volume or increased osmolality, where does it send signals too?
it sends signals to the posterior pituitary to release ADH
when does the cycle of the feedback loop stop?
once the hypothalamus gets the message