Medical Terminology Simplified

Frame 4–3to Frame 4–10

Respiratory System • CHAPTER 4 113

(1)

A

B

(3)

(11)

(12)

(4)

(5)

(6)

(8)

(7)

(9)

(10)

CO 2

Alveolus O 2

(2)

( )

( )

( ) and

Figure 4-2Identifying the upper and lower respiratory tracts.