Respiratory System Exam-Questions and Answers Graded A+

Respiratory System Exam-Questions and Answers Graded A+ What is the respiration rate, in breaths per minute? Note that he has 5 breaths across 15 seconds. - ANSWER-20 * What do you think happens to the levels of CO2 in exhaled air as breathing rate increases? - ANSWER-They decrease * During normal ventilation, exhaled air has a CO2 concentration of 35 mmHg. What would you predict the value of the first exhalation would be after a prolonged breath hold? - ANSWER-Increased What did you predict what will happen if we suddenly put a hole in the barrel of the syringe. What happens to the inflated balloon? - ANSWER-The balloon will collapse The term that is simply defined as breathing is __________. - ANSWER-Ventilation * Which of the following is NOT a muscle that assists in the pressure changes associated with breathing? - ANSWER-Pleural sac * Gas exchange between the lungs and the atmosphere occurs in the __________. - ANSWER-Alveoli Which word or phrase means "the exchange of gases between the atmosphere and the lungs"? - ANSWER-Ventilation * Which structure is part of both the lower respiratory tract and the conducting system? - ANSWER-Bronchus * What is a function of the pleural fluid? - ANSWER-To hold the lungs to the thoracic wall * Which key property of the bronchi increases as the average diameter of the passageways decreases? (Hint: it also occurs in the arterial vasculature.) - ANSWER-Cross-sectional area The CFTR channel is an anion channel that is dysfunctional in patients with cystic fibrosis. It is required for the proper production of mucus in the respiratory tract. Which anion moves through the CFTR channel? - ANSWER-Chloride Which of the following correctly states the relationship known as Boyle's law? - ANSWER-P1V1 = P2V2 What would the pressure of a gas become if its starting pressure was 6 mmHg in a volume of 30 L, and the volume decreased to 5 L? - ANSWER-36 mmHg * As one moves up in altitude, the atmospheric pressure decreases. In Vail, Colorado (altitude 8022 ft or 2445 m), the atmospheric pressure is approximately 570 mmHg. What would the partial pressure of oxygen be in Vail? - ANSWER-120 mmHg