BIOLOGY 221
Practice Quizzes - Respiration
J.E. Lathrop-Davis, Assistant Professor
CCBC Catonsville

1. What type of tissue comprises the

1. Alveolar walls _________________________________.

2. Capillary walls are composed of _________________________________.

2. What is the major factor governing the rate of diffusion which can be controlled and changed?

   
   
   

3. Which circulation:

1. Oxygenates the blood? _________________________________.

2. Nourishes the tissues of the lungs and respiratory passageways? _________________________.

4. Regarding innervation:

1. Sympathetic innervation to the bronchioles results in _______________________ of the bronchi.

2. Parasympathetic innervation to the bronchioles results in _______________________ of the bronchi.

5. Air moves from areas of _______ pressure to areas of _______ pressure.

6. _____________________ is movement of air into the lungs.

7. In order for air to move into the lungs, pressure in the lungs must ________________ compared to atmospheric pressure.

8. This (#7) is accomplished by ___________________ the size of the thoracic cavity.

9. Muscles responsible for #8 are the ___________________ and ____________________.

10. For air to move out of the lungs, pressure in the lungs must ___________________ compared to atmospheric pressure.

11. This (#10) is accomplished by _____________________ the size of the thoracic cavity.

12. For normal breathing (eupnea) this (#11) is accomplished by _________________________________.

13. _______________________ is the pressure within the alveoli of the lungs.

14. _______________________ refers to the ability of the lungs to expand and is important to expiration / inspiration (circle one)

15. _______________________ is the ability of the lungs to recoil and is important to expiration / inspiration (circle one).

16. Regarding gas laws:

1. _______________________ Law states that gas pressure in a container is inversely related to the volume it occupies.

2. _______________________ Law states that the pressure exerted by an individual gas in a mixture is proportional to its percentage of the mixture.

3. _______________________ Law states that when a gas comes into contact with a liquid it will dissolve in proportion to its partial pressure.

17. Two factors that increase airway resistance are:

    1. _______________________ and

    2. _______________________

18. Regarding gas exchange:

    1. _______________________ is exchange of gas between the alveoli and blood.

    2. ______________________ is exchange of gas between the blood and interstitial fluid.

19. Regarding gas transport:

    1. Most oxygen is transported in the blood ______________________.

    2. Most carbon dioxide is transported in the blood ______________________.

20. List two functions of the respiratory system.

    
    
    

21. Name the two functional divisions of the respiratory system