Lab Acid Base Homeostasis

Interactive Physiology Worksheet:
Fluid, Electrolyte, and Acid-Base Balance: Acid-Base Homeostasis 1. List the three important buffer systems in the body: protein buffer systems 1. _______________________________________________________________________

carbonic acid- bicarbonate system 2. _______________________________________________________________________

phosphate buffer system 3. _______________________________________________________________________
2. Write the equation showing the relationship of CO2 and H2O levels with bicarbonate and hydrogen ion levels:

H2CO3 H+ + Hco3 CO2 + H2O  ________________  ____________________
3.
increased A decrease in respiration will result in _______________ CO2 and will shift the equation to the

left hydrogen (H+) _________________, resulting in an increase in ______________ ions, making the plasma more acidic ______________.

4. When body pH is decreased, what are the three compensatory renal mechanisms to restore pH?

Sweat 1. ____________________________________________________________________________ Aspiration 2. ____________________________________________________________________________
Urination 3. ____________________________________________________________________________ 7.35 7.45 5. a. Normal arterial pH is ______________ to ______________.

b. What is the pH in alkalosis? ____________________ alkalosis refers to an excess of base in the blood that causes the pH to rise ab

Acidosis refers to an excess c. What is the pH in acidosis? _____________________ of acid in the blood that causes the pH to fall belo

Page 1 of 3 BIO1014 Anatomy and Physiology II Lab © 2013 South University

6.With ketoacidosis, show what happens to the following:

decrease a. _______________ plasma pH left b. _______________ shift of the carbonic acid/bicarbonate system

decrease c. _______________ bicarbonate levels increase d. _______________ respiratory rate increase e. _______________ renal excretion of H+

7.

With metabolic alkalosis, show what happens to the following:

decrease a. _______________ plasma pH left b. _______________ shift of the carbonic acid/bicarbonate system increase c. _______________ bicarbonate levels increase d. _______________ respiratory rate increase e. _______________ renal excretion of bicarbonate

8. With respiratory acidosis, show what happens to the following:

decrease a. _______________ plasma pH

left b. _______________ shift of the carbonic acid/bicarbonate system decrease c. _______________ respiratory rate increase d. _______________ renal excretion of bicarbonate increase e. _______________ renal excretion of H+

Page 2 of 3 BIO1014 Anatomy and Physiology II Lab © 2013 South University

9. With respiratory alkalosis, show what happens to the following: increase a. _______________ plasma pH

left b. _______________ shift of the carbonic acid/bicarbonate system increase c. _______________ respiratory rate

decrease d. _______________ renal excretion of bicarbonate increase e. _______________ renal excretion of H+

Page 3 of 3 BIO1014 Anatomy and Physiology II Lab © 2013 South University