4) Which of the following will increase alveolar PO2?a) increase in metabolism and no change in alveolar ventilationb) breathing air with 15% oxygen at sea levelc) increase in alveolar ventilation matched by an increase in metabolismd) increased alveolar ventilation with no change in metabolisme) carbon monoxide poisoning

5) Which of the following will cause the largest increase in systemic arterial oxygensaturation in the blood?a) an increase in red cell concentration (hematocrit) of 20%b) breathing 100% O2 in a healthy subject at sea levelc) an increase in arterial PO2 from 40 to 60 mmHgd) hyperventilation in a healthy subject at sea levele) breathing a gas with 5% CO2, 21% O2, and 74% N2 at sea level

An increase in the level of carbon dioxide in the blood will:Question 47Answera.decrease alveolar ventilation.b.decrease pulmonary ventilation.c.decrease the rate of breathing.d.increase the pH of arterial blood.e.increase the rate of breathing.

Which factor would reduce the alveolar ventilation rate the most?Group of answer choicesdecreased dead space.increased tidal volume.increased dead space.increased respiratory rate.

Which of the following would you NOT expect to happen at high altitude? Question 5Answer a. A drop in atmospheric pO2 b. An increase in ventilation rate c. An increase in arterial pCO2 d. A drop in alveolar pO2 e. A drop in arterial pO2

Ventilation is increased the most by:Group of answer choicesincreases in arterial PO2.increases in arterial PCO2.decreases in arterial PO2.decreases in arterial PCO2.