Part 2 book “Pre test physiology” has contents: Respiratory physiology, cardiovascular physiology, gastrointestinal physiology, renal and urinary physiology, reproductive physiology, endocrine physiology. | Respiratory Physiology Questions 160. A healthy 30-year-old woman is referred for a life insurance physical exam. History reveals that she has never smoked and vesicular breath sounds are heard at the periphery of the lung with auscultation. In the patient’s spirometry tracing below, the expiratory reserve volume (ERV) equals which of the following? a. C b. D c. E d. C + D e. E – D 161. A group of third-year medical students accompanied a medical mission team to Peru, South America. After arriving at the airport in Bolivia, they hiked to a remote mountain village in the Andes at an elevation of 18,000 ft. With a barometric pressure of 380 mm Hg at this altitude, what would be the resulting PO 2 of the dry inspired air? a. 160 mm Hg b. 100 mm Hg c. 80 mm Hg d. 70 mm Hg e. 38 mm Hg 162. A 28-year-old man is admitted to the emergency department with multiple fractures suffered in a car accident. Arterial blood gases are ordered while the patient is breathing room air. After the first-year resident obtains an arterial blood sample from the patient, the glass plunger slides back, drawing an air bubble into the syringe before it is handed to the blood gas technician for analysis. How does exposure to room air affect the measured values of PO 2 and PCO 2 in arterial blood? a. The measured values of both PaO 2 and PaCO 2 will be higher than the patient’s actual values. b. The measured values of both PaO 2 and PaCO 2 will be lower than the patient’s actual values. c. The measured PaO 2 will be higher and the measured PaCO 2 will be lower than the patient’s actual blood gas values. d. The measured PaO 2 will be lower and the measured PaCO 2 will be higher than the patient’s actual blood gas values. e. The measured values of PaO 2 and PaCO 2 will accurately reflect the actual values. 163. A 68-year-old woman with pulmonary fibrosis presents with a complaint of increasing dyspnea while performing activities of daily living. She is referred for pulmonary function testing to .
