#Question id: 11086
#Unit 7. System Physiology – Animal
A 17-year-old female was bicycling without a helmet
when she fell and hit her head. In the emergency room, she was not conscious
and was receiving ventilator assistance. Her blood gases follow:
PaO2 = 52 mm Hg,
PaCO2 = 75 mm Hg, pH = 7.15, and
HCO3− = 31 mM
The majority of the CO2 was being transported as
#Question id: 11087
#Unit 7. System Physiology – Animal
Which of the following oxygen-hemoglobin dissociation curves corresponds to normal blood (red line) and blood containing carbon monoxide (green line)?
#Question id: 11088
#Unit 7. System Physiology – Animal
At a fraternity party a 17-year-old male places a paper bag over his mouth and breathes in and out of the bag. As he continues to breathe into this bag, his rate of breathing continues to increase. Which of the following is responsible for the increased ventilation?
#Question id: 11089
#Unit 7. System Physiology – Animal
A 45-year-old man inhaled as much air as possible
and then expired with a maximum effort until no more air could be expired. This
produced the maximum expiratory flow-volume curve shown in the following
diagram. What is the forced vital capacity of this man (in liters)?
#Question id: 11090
#Unit 7. System Physiology – Animal
An aviator is flying at 30,000 ft where the barometric pressure is 226 mm Hg. He is breathing 100% oxygen, his alveolar PCO2 is 40 mm Hg, and his alveolar water vapor pressure is 47 mm Hg. What is the alveolar PO2 of the aviator (in mm Hg)? (Assume that the respiratory quotient is equal to 1.)
#Question id: 11091
#Unit 7. System Physiology – Animal
A diver is breathing 10% O2 at a pressure of 2000 mm Hg. The diver’s body temperature is 37°C, and PCO2 = 32 mm Hg. What is the alveolar PO2?