RT (Egan's) Fundamentals Ch. 11 Questions & Answers Already Passed
What is the primary function of the lungs? - Correct Gas exchange During each cycle of normal resting ventilation, a volume of gas is moved into and out of the respiratory tract. This cyclical volume is called the: - Correct tidal volume (VT). Which of the following pressures vary throughout the normal breathing cycle? 1. Alveolar pressure (Palv) 2. Body surface pressure (Pbs) 3. Mouth pressure (Pao) 4. Pleural pressure (Ppl) - Correct 1 and 4 only Which of the following pressures normally remains negative (relative to atmospheric pressure) during quiet breathing? - Correct Ppl Which of the following pressure gradients is responsible for the actual flow of gas into and out of the lungs during breathing? - Correct Transrespiratory pressure gradient (Palv - Pao) Which of the following pressure gradients is responsible for maintaining alveolar inflation? - Correct Transpulmonary pressure gradient (Palv - Ppl) Which of the following statements about alveolar pressure (Palv) during normal quiet breathing is true? - Correct It is negative during inspiration and positive during expiration
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