I will understand how the volume of urine is regulated.

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Presentation transcript:

I will understand how the volume of urine is regulated. MT: Urinary System I will understand how the volume of urine is regulated.

3 hormones control amount of urine 1. Antidiuretic Hormone (ADH) Decreases volume of urine 2. Aldosterone 3. Atrial Natriuretic Hormone (ANH) Increases volume of urine

Battle of the Hormones VS. ADH Aldosterone ANH

ADH ADH released from pituitary gland in brain ADH travels through blood to collecting duct of kidney ADH allows water to leave collecting duct to be reabsorbed by blood Resulting in less water in urine, hence less volume of urine

Aldosterone Works in concert with ADH Adrenal gland (located above kidneys) release aldosterone Aldosterone travels through blood to distal tubule and collecting duct and allows more filtrates to be reabsorbed by blood Leads to less filtrates in urine, hence lower volume of urine

ANH ANH is released by cardiac cells ANH travels through blood to collecting duct of the kidney ANH keeps filtrates in collecting ducts, thus water will stay to keep balance Results in more water leaving in the urine and a higher volume of urine

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