1. Small volume of concentrated urine passes to the bladder Large volume of dilute urine passes to the bladder WATER CONTENT OF BLOOD NORMAL BRAIN KIDNEY BRAIN

2. Small volume of concentrated urine passes to the bladder Large volume of dilute urine passes to the bladder WATER CONTENT OF BLOOD NORMAL BRAIN KIDNEY BRAIN Salt eaten or much sweating occurs

3. Small volume of concentrated urine passes to the bladder Large volume of dilute urine passes to the bladder WATER CONTENT OF BLOOD NORMAL BRAIN KIDNEY BRAIN Salt eaten or much sweating occurs Water content of blood too low

4. Small volume of concentrated urine passes to the bladder Large volume of dilute urine passes to the bladder WATER CONTENT OF BLOOD NORMAL BRAIN KIDNEY BRAIN Salt eaten or much sweating occurs Water content of blood too low Pituitary releases much ADH

5. Small volume of concentrated urine passes to the bladder Large volume of dilute urine passes to the bladder WATER CONTENT OF BLOOD NORMAL BRAIN KIDNEY BRAIN Salt eaten or much sweating occurs Water content of blood too low Pituitary releases much ADH High volume of water reabsorbed by kidney

6. Small volume of concentrated urine passes to the bladder Large volume of dilute urine passes to the bladder WATER CONTENT OF BLOOD NORMAL BRAIN KIDNEY BRAIN Salt eaten or much sweating occurs Water content of blood too low Pituitary releases much ADH High volume of water reabsorbed by kidney High volume of water passes into blood

7. Small volume of concentrated urine passes to the bladder Large volume of dilute urine passes to the bladder WATER CONTENT OF BLOOD NORMAL BRAIN KIDNEY BRAIN Salt eaten or much sweating occurs Water content of blood too low Pituitary releases much ADH High volume of water reabsorbed by kidney High volume of water passes into blood Too much water drunk

8. Small volume of concentrated urine passes to the bladder Large volume of dilute urine passes to the bladder WATER CONTENT OF BLOOD NORMAL BRAIN KIDNEY BRAIN Salt eaten or much sweating occurs Water content of blood too low Pituitary releases much ADH High volume of water reabsorbed by kidney High volume of water passes into blood Too much water drunk Water content of blood too high

9. Small volume of concentrated urine passes to the bladder Large volume of dilute urine passes to the bladder WATER CONTENT OF BLOOD NORMAL BRAIN KIDNEY BRAIN Salt eaten or much sweating occurs Water content of blood too low Pituitary releases much ADH High volume of water reabsorbed by kidney High volume of water passes into blood Too much water drunk Water content of blood too high Pituitary releases little ADH

10. Small volume of concentrated urine passes to the bladder Large volume of dilute urine passes to the bladder WATER CONTENT OF BLOOD NORMAL BRAIN KIDNEY BRAIN Salt eaten or much sweating occurs Water content of blood too low Pituitary releases much ADH High volume of water reabsorbed by kidney High volume of water passes into blood Too much water drunk Water content of blood too high Pituitary releases little ADH Low volume of water reabsorbed by kidney

11. Small volume of concentrated urine passes to the bladder Large volume of dilute urine passes to the bladder WATER CONTENT OF BLOOD NORMAL BRAIN KIDNEY BRAIN Salt eaten or much sweating occurs Water content of blood too low Pituitary releases much ADH High volume of water reabsorbed by kidney High volume of water passes into blood Too much water drunk Water content of blood too high Pituitary releases little ADH Low volume of water reabsorbed by kidney Low volume of water passes into blood

12. Small volume of concentrated urine passes to the bladder Large volume of dilute urine passes to the bladder WATER CONTENT OF BLOOD NORMAL BRAIN KIDNEY BRAIN Salt eaten or much sweating occurs Water content of blood too high Too much water drunk Low volume of water passes into blood Pituitary releases little ADH Water content of blood too low Pituitary releases much ADH High volume of water passes into blood High volume of water reabsorbed by kidney Low volume of water reabsorbed by kidney

13. Small volume of concentrated urine passes to the bladder Large volume of dilute urine passes to the bladder WATER CONTENT OF BLOOD NORMAL BRAIN KIDNEY BRAIN Not enough water Salt eaten or sweating Water content of blood too high Too much water drunk Low volume of water passes into blood Pituitary releases little ADH Water content of blood too low Pituitary releases much ADH High volume of water passes into blood High volume of water reabsorbed by kidney Low volume of water reabsorbed by kidney

14. Salt eaten or much sweating occurs Water content of blood too high Too much water drunk Low volume of water passes into blood Pituitary releases little ADH Water content of blood too low Pituitary releases much ADH High volume of water passes into blood Salt eaten or much sweating occurs Water content of blood too high Too much water drunk Low volume of water passes into blood Pituitary releases little ADH Water content of blood too low Pituitary releases much ADH High volume of water passes into blood Salt eaten or much sweating occurs Water content of blood too high Too much water drunk Low volume of water passes into blood Pituitary releases little ADH Water content of blood too low Pituitary releases much ADH High volume of water passes into blood High volume of water reabsorbed by kidney Low volume of water reabsorbed by kidney High volume of water reabsorbed by kidney Low volume of water reabsorbed by kidney High volume of water reabsorbed by kidney Low volume of water reabsorbed by kidney