TJ13 - Mad Dog Week 13 BISC 220 Supplemental Instruction...

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Mad Dog BISC 220 Supplemental Instruction Week 13 www.usc.edu/si ; bisc220sileaders@gmail.com 1 Exam: Friday, April 11 th 1) Expansion of the lungs occurs in response to: a. elimination of elasticity within the lungs. b. relaxation of the diaphragm. c. negative pressure within the esophagus. d. negative pressure between the diaphragm and the lungs. 2) The cartilaginous rings that surround the trachea and bronchi serve to: a. keep the airway open. b. create the negative pressure generated by the contraction of the diaphragm. c. maintain the movement of cilia within the airway. d. facilitate the transmission of respiratory signals from the trachea. 3) Outgoing air from the body follows which one of the following pathways? a. Bronchi, bronchioles, trachea, alveoli b. Bronchioles, bronchi, trachea, alveoli c. Alveoli, bronchioles, bronchi, trachea d. Trachea, bronchi, bronchioles, alveoli 4) Inspiration and expiration are necessary for the maintenance of gas exchange between an alveolus and a pulmonary capillary because: a. the phrenic nerve sends signals directly to the alveoli. b. gas exchange is dependent on the equality of gas concentrations across the alveolar membrane. c. the concentration gradients would disappear without them. d. body cells would cease to undergo metabolism without them. 5) A decreased concentration of surfactant leads to: a. a decrease in surface area for alveolar gas exchange. b. an inability to inspire air. c. a decrease in pulmonary elastic recoil. d. an inability of the phrenic nerve to transmit signals to the diaphragm. 6) Vigorous exercise would tend to:
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TJ13 - Mad Dog Week 13 BISC 220 Supplemental Instruction...

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