#Question id: 11072
#Unit 7. System Physiology – Animal
The following diagram shows pulmonary airway resistance expressed as a function of pulmonary volume. Which relationship best describes the normal lung?
#Question id: 11073
#Unit 7. System Physiology – Animal
The respiratory passageways have smooth muscle in their walls. Which of the following best describes the effect of acetylcholine and epinephrine on the respiratory passageways?
#Question id: 11074
#Unit 7. System Physiology – Animal
A 30-year-old woman performs a valsalva maneuver about
30 min after eating lunch. Which of the following best describes the changes in
pulmonary and systemic blood volumes that occur in this woman?
#Question id: 11075
#Unit 7. System Physiology – Animal
A 65-year-old man with emphysema due to 34 years of cigarette smoking is admitted to hospital due to dyspnea. With further tests the mean pulmonary arterial pressure is determined to be 45 mm Hg at rest. He is hypoxic (PO2 = 49 mm Hg), hypercapnic (85 mm Hg), and slightly acidotic. The cardiovascular and oxygen changes are due to which of the following?
#Question id: 11076
#Unit 7. System Physiology – Animal
Which of the following will decrease pulmonary blood flow resistance?
#Question id: 11077
#Unit 7. System Physiology – Animal
A person’s normal tidal volume is 400 ml with a dead space of 100 ml. The respiratory rate is 12 breaths/min. The person is placed on ventilator for surgery and the tidal volume is 700 with a rate of 12. What is the approximate alveolar Pco2 for this person?