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BIO: Respiratory
Anatomy Final Exam
Question | Answer |
---|---|
1. Maximum air movement in the lungs | vital capacity |
2. Which of the following is the most abundant gas in the air? | Nitrogen |
3. The lining of the trachea is: | ciliated columnar epithelium |
4. Airways that supply one lobe of a lung are called: | Secondary Bronchi |
5. The elastic structure that folds back over the glottis, preventing the entry of liquids or solid food into the respiratory tract during swallowing, is the | epiglottis. |
6. The layer of serous membrane that covers the surface of the lungs is the: | visceral pleura |
7. Surfactant: | plays a key role in keeping alveoli open |
8. Most of the carbon dioxide transported by the blood(approximately 70%) is: | ultimately transported as bicarbonate ions in the plasma |
9. Levels of which of the following are responsible for regulating respiratory activities under normal conditions? | carbon dioxide |
10. When at rest, the amount of air that enters and leaves the lungs in a normal respiratory cycle is the: | tidal volume. |
11. The actual sites of gas exchange within the lungs are: | Alveolar |
12. Right Lung has how many lobs: | 3 |
13. Left Lung has how many lobs: | 2 |
14. Lob tissue is: | ciliated columnar epithelium |
15. Alveolar tissue is: | simple squamous epithelium |
16. thyroid cartilage is: | the lining of the Adams apple |
17. Partial pressure gradient for CO2 in the lungs is less steep: | Venous blood Pco2 = 45 mm Hg Alveolar Pco2 = 40 mm Hg |
18. Partial pressure gradient for O2 in the lungs is steep: | Venous blood Po2 = 40 mm Hg |
19. Alveolar Po2: | 100 mm Hg |
20. Molecular O2 is carried in the blood: | 1% dissolved in plasma: 99% loosely bound to each Fe of hemoglobin (Hb) in RBCs |
21. CO2 is transported in the blood in three forms | 1.) 7 to 10% dissolved in plasma. 2.) 20% bound to globin of hemoglobin (carbaminohemoglobin). 3.) 70% transported as bicarbonate ions (HCO3-) in plasma. |
22. Make more 02 when: | exercising |
23. Hold breath: | PCo2 with go up to increase breathing |