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

2. 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

3. Battle of the Hormones
VS.
ADH
Aldosterone
ANH

4. 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

6. 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

8. 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