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11. Explain how local mechanisms allow for the matching of ventilation and
perfusion.
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- 9. 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 lawWhich is the order of airflow during inhalation? nasal cavity, trachea, larynx, bronchi, bronchioles, alveoli nasal cavity, larynx, trachea, bronchi, bronchioles, alveoli nasal cavity, larynx, trachea, bronchioles, bronchi, alveoli nasal cavity, trachea, larynx, bronchioles, bronchi, alveoli12. Assume a normal female with a resting tidal volume of 400 mL, respiratory rate of 13 breaths/ min, and dead space of 125 mL. When she exercises, which of the following scenarios would be most efficient for increasing her oxygen delivery to the lungs? a) increase respiratory rate to 20 breaths/min but no change in tidal volume b) increase tidal volume to 550 mL but no change in respiratory rate c) increase tidal volume to 500 mL and respiratory rate to 15 breaths/min
- 07. An inhalant is what? What are the consequences of inhalants and their health risks?18. Immediately after ascending from sea level to 2100 m (7000 ft) above sea level, a healthy 27-year-old woman hyperventilates. Which of the following best explains the hyperventilation? A) Decreasing oxygen concentration in arterial blood stimulates the carotid and aortic bodies B) Decreasing oxygen saturation in arterial blood stimulates the carotid and aortic bodies C) Decreasing Po₂ in arterial blood stimulates the carotid and aortic bodies D) Decreasing Po, in arterial blood stimulates central chemoreceptors E) Decreasing Pco₂ in arterial blood stimulates carotid chemoreceptors1.Describe and differentiate between external and internal respiration.
- 8. Which of the following measures of pulmonary function best discriminates between an obstructive and a restrictive disorder? A) Inspiratory capacity B) Forced midexpiratory flow (FEF 25%-75%) C) Forced expiratory volume in 1 sec (FEV₁) D) Forced vital capacity (FVC) E) Ratio of FEV₁ to FVC5.What is the role of gas partial pressures in pulmonary diffusion?5. Trace the movement of air through the conducting zones of the respiratory system to the respiratory zone. Be able to distinguish between the anatomical structures that are in the conducting zone vs. the respiratory zone.
