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Exam5 study guide

Exam5 study guide - Study Guide for Exam 5 Chapter 18 1...

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Study Guide for Exam 5 Chapter 18 1. Compare external, internal and cellular respiration 2. List and describe the factors on diffusion in the lungs. Note the most important factor. 3. List and explain factors influencing movement of gases. 4. Compare the solubility of O 2 and CO 2 . 5. Give the PO 2 and PCO 2 at the alveoli and tissues under resting conditions. 6. Give the normal pH range in arterial and venous blood. Why different? 7. Describe 4 types of hypoxia. 8. List causes of low PO 2 in the alveoli. 9. List conditions that reduce alveolar gas exchange. 10. Describe the components of the respiratory membrane. 11. Explain in what forms O 2 is carried in the blood, and in what relative percentage. 12. Describe the makeup of a Hemoglobin molecule, note protein and non-protein components. 13. Compare adult, fetal and sickle cell hemoglobin molecules. 14. Be able to describe the oxygen – hemoglobin dissociation curve. 15. Use the curve to determine hemoglobin saturation at a given PO 2 . 16. List factors that shift the curve, note which way each factor shifts, right or left and how the helps homeostasis. 17. Describe how CO 2 is transported through the blood. Note forms of CO 2 , and relative concentrations of each. 18. Explain what happens when CO 2 is added to water. 19. Define carbminohemogloin. 20. Explain chloride shift, where and when it occurs. 21. Explain what influences control of ventilation rate. 22. Explain the role of medullary chemoreceptors, carotid and aortic bodies. 23. Briefly explain the functions of the pneumotaxic, apneustic and rhythmicity centers for regulation of ventilation. 24. Explain reflexes that effect ventilation. 25. What is the function of hiccoughs or hiccups. 26. Does breathing into a paper bag help hyperventilation? Why or why not? 27. Compare respiratory acidosis and alkalosis. Note causes and how compensated, see IP for a summary .
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