SOLUTIONS TO EXERCISES, LESSON 1
1.
c
The exchange of gases between the air in the lungs and blood. (para 1-1a)
2.
d
Tubes which lead from the trachea to the lungs. (para 1-5a)
3.
a
Air cells or cavities in the skull which are connected with the nasal chambers
4.
d
5.
a
6.
c
Breathing which occurs because of the contraction and relaxation of the
7.
b
An infection of the lungs caused by bacteria or viruses in which the walls of
8.
b
9.
b
MD0806
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