Question
1. Inspiration is the process of respiration6 The tidal volume is measured by a. breathing normally into a that involves the spirometer b. adding VC, IRV, and ERV values c blowing hard into the mouthpiece d. none of the above a. exhalation of air b relaxation of respiratory muscles inhalation of air d. exchange of gases -7, level in the blood is regulated by pH a. exercise b. inspiration c. pulmonary ventilation rates d. vital capacity 2 The exchange of oxygen and carbon dioxide across the respiratory membrane is called a. breathing b. internal respiration c external respiration In the bell jar model of a working lung the elastic rubber at the base of the jar can be stretched to demonstrate pulmonary inspiration. It represents the 8. d. inspiration 3. The primary factor resulting in a drop in intrapleural pressure is: a. inspiration b. a rise in intrapulmonary pressure c contraction of the diaphragm d. all of the above a. diaphragm b. lungs c. internal intercostal muscles d. parietal pleura The combination of carbon dioxide and water forms the acidic product:9. a bicarbonate ions b. carbonic acid c carbon monoxide d. hydrochloric acid 4. When using a wet spirometer to measure lung volume, it is not possible to determine inspiratory reserve volume (IRV) a. True b. False The maximum volume of air that can be inhaled and exhaled in one breath can be measured with a spirometer. It is called the 5. 10. Rising levels of carbon dioxide in the bloodstream result in: a. rising levels of acidity in the blood b. an increased breathing rate c a drop in blood pH d. all of the above vital capacity b. a. total lung capacity c. inspiratory reserve volume d. expiratory reserve volume
Explanation / Answer
1. c. inhalation of air
2. c. external respiration
3. d. all of the above
intrapleural pressure decreases as a result of inspiration. During inspiration there is contraction of the diaphragm and increase in intrapulmonary pressure
4. b. carbonic acid
5. a. vital capacity
6. a. by breathing normally into a spirometer
7. a. exercise
8. a. diaphragm
9. b. false
10. d. all of the above
