What is the central role of sodium in fluid and electrolyte

1. What is the central role of sodium in fluid and electrolyte balance?

2. Explain how calcium is balanced in the blood.

3. How is sodium lost from the body?

4. Where is the thirst center located?

5. What is the range of the pH scale?

6. Name two proteins associated with buffering the blood and which fluid compartment they buffer.

7. What is angiotensin II? How does it work? What is its purpose?

8. How is angiotensin II produced?

9. When the body's pH falls, what two substances are given off and which two physiological systems give them off?

10. Name the physiological system that is the last line of defense against a pH imbalance in the body.