Question

i. directions match the term in the left column with the best definition in the right column. write the letter of your choice in the space provided.

1. diaphragm a. the main airways that reach into each lung
2. trachea b. a disease that progressively destroys the walls of the alveoli
3. bronchi c. the windpipe
4. asthma d. a muscle that separates the chest from the abdominal cavity
5. emphysema e. an inflammatory condition in which trachea, bronchi, and bronchioles become narrowed

ii. directions in the space provided, write the letter of the choice that best completes the statement or answers the question.

1. the main function of the respiratory system is to

a. carry nutrients to body cells.
b. exchange gases between the body and the environment.
c. prevent diseases caused by pathogens.
d. eliminate wastes from the body.

1. which is a flap of tissue that folds down to close off the entrance to the larynx and trachea when you swallow?

a. epiglottis
b. alveolus
c. diaphragm
d. alveoli

1. what connects the throat and the trachea?

a. epiglottis c. diaphragm
b. pulmonary artery d. larynx

1. the most important decision you can make for your respiratory health is

a. to clear the sinuses.
b. not to increase respiration during exercise.
c. not to smoke.
d. to ignore common respiratory infections.

1. what is a contagious bacterial infection that usually affects the lungs?

a. tuberculosis c. emphysema
b. bronchitis d. sinusitis

Explanation:

• 1. diaphragm: The diaphragm is a muscle that separates the chest from the abdominal cavity.
• 2. trachea: The trachea is the windpipe.
• 3. bronchi: The bronchi are the main airways that reach into each lung.
• 4. asthma: Asthma is an inflammatory condition in which trachea, bronchi, and bronchioles become narrowed.
• 5. emphysema: Emphysema is a disease that progressively destroys the walls of the alveoli.
• 6. The main function of the respiratory system: The main function of the respiratory system is to exchange gases between the body and the environment.
• 7. Flap of tissue that folds down to close off the entrance to the larynx and trachea when you swallow: The epiglottis is a flap of tissue that folds down to close off the entrance to the larynx and trachea when you swallow.
• 8. What connects the throat and the trachea: The larynx connects the throat and the trachea.
• 9. The most important decision you can make for your respiratory health: The most important decision you can make for your respiratory health is not to smoke.
• 10. What is a contagious bacterial infection that usually affects the lungs: Tuberculosis is a contagious bacterial infection that usually affects the lungs.

Answer:

1. d
2. c
3. a
4. e
5. b
6. b
7. a
8. d
9. c
10. a