Osmoregulation & Antidiuretic Hormone (ADH)

Question 1

What happens when you are dehydrated?

Answer 1

your blood will have a low water potential
detected by osmoreceptors in the hypothalamus
posterior pituitury secretes antidureitc hormone (ADH)
ADH carried in the blood stream
ADH will bind to a specific receptor - protein on collecting ducts
increases their permeability to water
water will move out of the collecting duct by osmosis