Physiology Module 10 in Physiofinder Investigative Modules in Physiology, by P.
ID: 3514462 • Letter: P
Question
Physiology Module 10 in Physiofinder Investigative Modules in Physiology, by P. George Simone. Control of Breathing 1. This question can be omitted. 2. Describe the effect of breathing pure O, (versus normal air) on Gina's tidal volume. 3. Describe the effect of lowering O2 pressure on tidal volume 4 What is the cause of the hypoventilation seen in early recovery after changing from low O, pressure to normal air? Hint: Which blood gas will be most affected by hyperventilation (an increase in minute volume, due to an increase in respiratory rate &/or depth). Note that hyperventilation is not the same as tachypnea, which is rapid breathing that may not increase minute volume if the tidal volume is low. 5. Describe the effects of elevated CO, on Gina's tidal volume. 6. Which appears to have the more profound effect on pulmonary ventilation, elevated O, or elevated CO,? 7. Describe the effects of hyperventilation on post- hyperventilatory rate and depth of breathing. 8. What changes in blood chemistry may be responsible for the post-ventilation changes in tidal volume?Explanation / Answer
2. Gina's tidal volume decreases by breathing pure oxygen.
3. Tidal volume increases by lowering oxygen pressure.
4. The causes of hypo ventilation would be increase in carbon dioxide and less oxygen reaching the brain.
5. Tidal volume increases by elevating carbon dioxide levels.