A mountain climber ascends to an altitude where the partial pressure of oxygen in the atmosphere...

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Biology

A mountain climber ascends to an altitude where the partialpressure of oxygen in the atmosphere is very low.
a. What happens to the climberâ€™s ventilation rate?
b. Which chemoreceptor (oxygen or carbon dioxide/pH) would causethis change in ventilation rate at high altitude? Your answershould reflect that you know the stimuli for change in ventilationrate under different conditions
c. What happens to plasma concentrations of carbon dioxide aftera period of time hyperventilation?
d. What happens to plasma pH after a period of time at highaltitude? Your answer should reflect that you understand therelationship between CO2 levels and pH.
e. What happens to levels of erythropoietin in the blood after aperiod of time at high elevations? Your answer should include thestimulus for the release of EPO
f. How does a low concentration of oxygen in the alveoli affectthe state of contraction of pulmonary arterioles?
g. Explain why pulmonary edema is a symptom of altitudesickness. Your answer should demonstrate your understanding offluid exchanges at the capillary level

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3.6 Ratings (323 Votes)

Answer a At higher altitudes the ventilation rate of the climbers increases leading to decrease in the partial pressure of oxygen This is due to the decreased availability of atmospheric oxygen as the body is unable to synthesize enough ATP in the cells b The main stimulus of See Answer

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