Thirst an ADH Flashcards

1
Q

what is the primary regulator of water intake?

A

thirst

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2
Q

why do we get thirsty?

A

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)

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3
Q

what is the function of the ADH (vasopressin) mechanism?

A

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

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4
Q

when the hypothalamus senses low blood volume or increased osmolality, where does it send signals too?

A

it sends signals to the posterior pituitary to release ADH

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5
Q

when does the cycle of the feedback loop stop?

A

once the hypothalamus gets the message

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