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- 2. Which of the following has the most powerful effect on the respiratory components of the medulla? A. Decreased O2 B. Increased H+ C. Decreased CO2 D. Increased pH6. During a normal exhalation, the 1. intra-alveolar pressure is greater than the atmospheric pressure. 2. pleural pressure is less than the atmospheric pressure. 3. intra-alveolar pressure is in equilibrium with the atmospheric pressure. 4. pleural pressure progressiverly decreases. A. 1 only B. 4 only C. 1 and 2 only D. 3 and 4 onlyDuring inhalation _______. a. the thoracic cavity expands b. the diaphragm relaxes c. atmospheric pressure declines d. the glottis is closed
- During inhalation, ________. a. the thoracic cavity expands d. the diaphragm relaxes c. atmospheric pressure declines d. the lungs deflate17. Cartilage is found in which of the following structures of the tracheobronchial tree? 1. Bronchioles 2. Respiratory bronchioles 3. Segmental bronchi 4. Terminal bronchioles A. 1 only B. 3 only C. 2 and 3 only D. 1 and 4 only9. Which of the following states that the rate of gas diffusion is inversely proportional to the weight of the gas? A. Graham’s law B. Charles’ law C. Henry’s law D. Gay-Lussac’s law
- What is the role of alveolar macrophages? to secrete pulmonaty surf actant to secrete antimicrobial proteins to remove pathogens and debris to facilitate gas exchangeThe respiratory system_______. a. provides body tissues with oxygen b. provides body tissues with oxygen and carbon dioxide c. establishes how many breaths are taken per minute d. provides the body with carbon dioxideHow would paralysis of the diaphragm alter inspiration? It would prevent contraction of the intercostal muscles It would prevent inhalation because the intrapleural pressure would not change It would decrease the intrapleural pressure and allow more air to enter the lungs It would slow expiration because the lung would not relax.
- 4. The canals of Lambert are found in the A. trachea. B. terminal bronchioles. C. alveoli. D. main stem bronchi.Describe the following adaptations for gas exchange: body surface, tracheal tubes, gills, and lungs.Restrictive airway diseases. increase the compliance of the lung decrease the compliance of the lung increase the lung volume decrease the work of breathing