Biology 122 Study Objectives -- Chapter 27

  1. How are body fluids distributed among intracellular and extracellular fluid? What are the components of extracellular fluid?
  2. Differentiate between an electrolyte and a nonelectrolyte.
  3. Describe the composition of ECF and ICF.
  4. How are fluids exchanged between plasma, interstitial fluid and ICF?
  5. How do we gain water? How do we lose water?
  6. How is water intake regulated?
  7. How is water output regulated?
  8. Describe disorders of water balance: dehydration, hypotonic hydration, edema
  9. How are electrolytes obtained?
  10. How are electrolytes lost?
  11. Describe the role of sodium in the body, including its role in regulating blood pressure (also include roles of renin, aldosterone, ANF, estrogen, glucocorticoids, and progesterone as they relate to sodium).
  12. Describe the roles and regulation of potassium, calcium, magnesium and chloride.
  13. Review the meaning of the following: acid, base, pH, alkalosis, acidosis.
  14. How are acids obtained in the body?
  15. What substances act as buffers in the body?
  16. Describe the role of the respiratory system in the control of acidity.
  17. Describe the role of the kidneys in the control of acidity.
  18. Describe the cause of respiratory acidosis, respiratory alkalosis, metabolic acidosis, metabolic alkalosis
  19. What is the normal range of blood pH, and the extremes for life.