1. The upper respiratory system includes all of the follwoing except:
a. nose
b. larynx
c. trachea
d. paranasal sinuses
2. The firmness of the nose is mainly due to
a. bone
b. cartilage
c. dense irregular collagen connective tissue
d. dense smooth muslce
3. To inhale, the intrapleural pressure must ___________ theatmospheric pressure.
a. exceed
b. be lower than
c. be the same
d. cause a change in