#Question id: 11070
#Unit 7. System Physiology – Animal
A patient has a dead space of 150 ml, functional residual capacity of 3 L, tidal volume of 650 ml, expiratory reserve volume of 1.5 L, a total lung capacity of 8 L, respiratory rate of 15 breaths/min. What is the alveolar ventilation?
#Question id: 11071
#Unit 7. System Physiology – Animal
At the end of inhalation, with an open glottis, the pleural pressure is
#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?