Decrease in alveolar oxygen concentration causes
A) vasoconstriction of the pulmonary arteriole.
B) relaxation of bronchiolar smooth muscle.
C) vasodilation of the pulmonary arteriole.
D) vasoconstriction of the pulmonary arteriole and vasodilation of the pulmonary arteriole.
E) vasoconstriction of the pulmonary arteriole and relaxation of bronchiolar smooth muscle.
Correct Answer:
Verified
Q23: As inspiration begins, the intra-alveolar pressure is
A)
Q24: The intrapleural pressure
A) falls before inspiration.
B) falls
Q25: Hemoglobin may increase in animals as a
Q26: Pulmonary ventilation is the product of
A) residual
Q27: Too little alveolus ventilation in comparison to
Q29: Thickness of the barriers separating the air
Q30: Five different respiratory pigments can be found
Q31: Hemocyanin contains
A) copper.
B) iron.
C) sulphur.
D) validium.
E) phosphorus.
Q32: Effect of pH on % Hb saturation
Q33: Gills are involved in heat transfer as
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