Biology / Unit 12 Bio 2935 short lesson, about 20 seconds
ADH and Water Balance
Captions available
The idea
Antidiuretic hormone, released from the posterior pituitary, increases kidney water reabsorption by inserting aquaporin channels into kidney tubules, concentrating urine and raising blood pressure.
In practice
Dehydration raises blood osmolarity, triggering hypothalamic osmoreceptors to increase ADH secretion.
Where people slip
Insufficient ADH causes diabetes insipidus, marked by excess urine output, a distinct condition from diabetes mellitus.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Something wrong in this lesson? Flag it · Sources for Biology