Match each term with its definition or description.
a. respiratory membrane
b. respiratory mucosa
c. pharynx
d. larynx
e. trachea
f. alveoli
g. surfactant
h. primary bronchi
i. bronchioles
j. pleura
k. respiratory tree
l. upper respiratory tract
m. lacrimal sacs
n. alveolar ducts
o. conchae
p. lower respiratory tract
1. _____ Connects the larynx to the lung; also called the windpipe
2. _____ Small air tube that has no cartilage in its walls, only smooth muscle
3. _____ Reduces the surface tension of the fluid in the alveoli
4. _____ Contains the vocal cords and the epiglottis
5. _____ Separates the air in the alveoli from the blood in the capillaries of the lung
6. _____ Serous membrane covering the lung and the inner chest wall
7. _____ Also called the throat
8. _____ First branch off the trachea in the lung
9. _____ Lines most of the air distribution tubes
10. _____ Air sacs in which oxygen and carbon dioxide are exchanged in the lung
11. _____ Structures in the nose that help warm and humidify the air
12. _____ Term used to describe the air distribution system
13. _____ Structures from which tears drain into the nasal cavity
14. _____ Microscopic tubes that end in the alveolar sacs
15. _____ Refers to the respiratory structures outside the thorax
16. _____ Refers to the respiratory structures within the thorax
1. e. trachea
2. i. bronchioles
3. g. surfactant
4. d. larynx
5. a. respiratory membrane
6. j. pleura
7. c. pharynx
8. h. primary bronchi
9. b. respiratory mucosa
10. f. alveoli
11. o. conchae
12. k. respiratory tree
13. m. lacrimal sacs
14. n. alveolar ducts
15. l. upper respiratory tract
16. p. lower respiratory tract
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