You and your physiology instructor are trapped in an overturned ship. To escape,

Question

You and your physiology instructor are trapped in an overturned ship. To escape, you must swim underwater a long distance. You tell your instructor it would be a good idea to hyperventilate before making the escape attempt. Your instructor calmly replies, "What good would that do, since your pulmonary capillaries are already 100% saturated with oxygen?" What would you do and why? You and your physiology instructor are trapped in an overturned ship. To escape, you must swim underwater a long distance. You tell your instructor it would be a good idea to hyperventilate before making the escape attempt. Your instructor calmly replies, "What good would that do, since your pulmonary capillaries are already 100% saturated with oxygen?" What would you do and why?

Explanation / Answer

hyperventilation is the process in which rapid breathing occurs.exhaltion of air is more than that of inhalation of air.due to the increased inhalation the natural C02 levels in the body decreases.due to the decrease in Co2 levels carotid artery cant sense the co2 levels in body and cant pass information to respiratory center.so the normal inhalation progress is interupted.due to the decreased co2 levels the carotid arteries are consrticted so blood supply to brain decreases it leads to faintness,dizziness,even cardiac arrest.

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