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Anatomy and Physiology Practice Test: The Respiratory System
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Anatomy and Physiology Practice Test: The Respiratory System
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25 Questions

1. The lungs are perfused by two circulations: the pulmonary and the bronchial. The pulmonary circulation is for oxygenation of blood. The bronchial circulation supplies blood to the lung structures (tissue).
2. Under certain conditions, the vocal folds act as a sphincter that prevents air passage.
3. Strong emotions and pain acting through the limbic system activate sympathetic centers in the hypothalamus, thus modulating respiratory rate and depth by sending signals to the respiratory centers.
4. Nasal conchae mainly work on inhalation to warm and moisten air. They serve minor functions for exhalation.
5. The loudness of a personʹs voice depends on the ________.
6. In the plasma, the quantity of oxygen in solution is ________.
7. Which center is located in the pons?
8. The average individual has 500 ml of residual volume in his lungs.
9. The erythrocyte count increases after a while when an individual goes from a low to a high altitude because the ________.
10. The larynx contains ________.
11. Which of the following correctly describes mechanisms of CO2 transport?
12. The parietal pleura lines the thoracic wall.
13. Valsalvaʹs maneuver involves closing off the glottis (preventing expiration) while contracting the muscles of expiration, causing an increase in intra-abdominal pressure.
14. Which of the disorders below is characterized by destruction of the walls of the alveoli producing abnormally large air spaces that remain filled with air during exhalation?
15. The walls of the alveoli are composed of two types of cells, type I and type II. The function of type II is to ________.
16. Which of the choices below is not a functional process performed by the respiratory system?
17. Complete the following statement using the choices below. Air moves out of the lungs when the pressure inside the lungs is
18. Ventilation perfusion coupling means that more blood flows past functional alveoli than past nonfunctional alveoli.
19. Factors that influence the rate and depth of breathing include ________.
20. Gas emboli may occur because a ________.
21. Which of the following is not a stimulus for breathing?
22. Intrapleural pressure is normally about 4 mm Hg less than the pressure in the alveoli.
23. Respiratory control centers are located in the ________.
24. The functions of the nasal conchae are to enhance the air turbulence in the cavity and to increase the mucosal surface area exposed to the air.
25. The respiratory membrane is a combination of ________.

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