16. A thereby alteringto e in the partial pressure of oxygen causes pulmonary ar

Question

16. A thereby alteringto e in the partial pressure of oxygen causes pulmonary arterioles to 8to make gas exchange more efficient. n increas a. Constrict; perfusion b. Dilate; perfusion c. Constrict; ventilation d. Dilate; ventilation 17. With the Bohr Effect, more oxygen is released because a (n) a. Decrease in pH (acidosis) strengthens the hemoglobin-oxygen bond b. Decrease in pH (acidosis) weakens the hemoglobin-oxygen bond c. Increase in pH (alkalosis) strengthens the hemoglobin-oxygen bo d. Increase in pH (alkalosis) weakens the hemoglobin-oxygen bond

Explanation / Answer

an increase in the partial pressure of oxygen causes pulmonary arterioles to dilate thereby altering perfusion to make gas exchange more efficient.

With the Bohr effect, more oxygen is released because a decrease in pH (acidosis) weakens the hemoglobin-oxygen bond.

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