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.

All of the following conditions will cause an increase in the circulating levels of carbon dioxide in the blood, EXCEPT:Question 64Answera.anaerobic metabolism.b.lactic acidosis.c.acute hyperventilation.d.increased metabolism.

Which of the followig would increase the pH of the blood?   high intensity exercise resulting in the production of CO2. decreased ventilation causing a build up of CO2. increased ventilation at the lung to remove CO2. a higher ventilation to perfusion ratio (V/Q) in the lung.

A decrease in breathing rate reduces the amount of carbonic acid removed and causes an increase of hydrogen ions in the blood.Group of answer choicesTrueFalse

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

(b) Scientists investigated the effect of increasing carbon dioxide concentration in theair onthe rate and depth of breathing. The people who took part in the investigation werehealthyvolunteers.The people breathed atmospheric air containing 0.04% carbon dioxide for five minutes.They then breathed air containing 2% carbon dioxide for five minutes and thenreturned tobreathing atmospheric air for a further five minutes.The results are shown in Fig. 3.1.Fig 3.1Describe the effects of changing the carbon dioxide concentration of the air on the rateanddepth of breathing, as shown in Fig. 3.1.[4]