A mountain climber ascends to an altitude where the partialpressure of oxygen in the atmosphere is very low.
1. What happens to levels of erythropoietin in the blood after aperiod of time at high elevations?
2.How does a low concentration of oxygen in the alveoli affectthe state of contraction of pulmonary arterioles?
3.Explain why pulmonary edema is a symptom of altitudesickness