human physiology study questions 26

human physiology study questions 26 - at the end of passive...

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27:130 Study Questions Lecture 26 - Respiratory System: Ventilation, Lung Mechanics 1. Which of the following statement(s) is/are correct ? a. Terminal bronchiolar blood vessels is a sight of significant of gas exchange within the lungs. b. The larynx branches into the esophagus and the phyarynx. c. Intrapleural fluid is responsible for transmitting changes of volume and pressure created by the respiratory muscles into bulk flow of air in and out of the lungs. d. Diffusion is the process by which O 2 and CO 2 is transported through the pulmonary and systemic circulations. e. a and c are correct f.. none of the above are correct 2. Which of the following statement(s) is/ are false ? a. Transpulmonary pressure is greater in magnitude at the end of inspiration than
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Unformatted text preview: at the end of passive expiration. b. Alveolar pressure exceeds atmospheric pressure during expiration; during inspiration atmospheric pressure exceed alveolar pressure. c. A decrease in intrapleural pressure aides in inspiration. d. According to Boyle’s law, an increase in volume of the lung will drive air into the lung following the pressure gradient. e. None of the above are false f. a and c are false 3. Resistance in the airways is increased by: a. increased surfactant in the alveoli. b. increased parasympathetic stimulation. c. decreased radius of the alveoli containing surfactant. d. decreased pressure gradient between the atmosphere and the alveoli. e. all the above are true...
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