172) The normal partial pressure differences between inspired air and alveolar g

Question

172) The normal partial pressure differences between inspired air and alveolar gas for O2, CO2, H2O. and N2 can be explained because _____.

A) net movement of CO2 and N2 towards the alveoli and H2O movements towards the alveoli as respiratory water

B) net movements of CO2 towards the alveoli, O2 towards the alveoli, and H2O is added along the respiratory tract

C) net movements of CO2 , O2 and H2O into the alveoli from blood capillaries

D) net movements of CO2 towards the alveoli with net movements of O2 and H2O into the capillaries

173) You open a can of carbonated soda and pour it into a glass. The carbon dioxide formed bubbles because the partial pressure of carbon dioxide in the air above the soda ____ a process explained by ____ Law

A) increased; Charles

B) increased Boyle's

C) decreased; Dalton's

D) decreased; Henry's

174) Assuming you have normal respiratory function at sea level – start holding your breath. Which of the following could be true in 60 seconds?

A) the oxygen-hemoglobin dissociation curve is shifting to the left

B) arterial PCO2 = 50 mmHg

C) venous PO2 = 50 mmHg

D) alveolar PO2 = 105 mmHg

Explanation / Answer

172. D) net movements of CO2 towards the alveoli with net movements of O2 and H2O into the capillaries
173. D) decreased; Henry's
174. B) arterial PCO2 = 50 mmHg

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