Figure 21- 2 Mechanics of Ventilation
Use Figure 21- 2 to answer the following questions:
-Which muscles) produces) the movement labeled "1"?
A) external intercostals
B) internal intercostals
C) rectus abdominis
D) diaphragm
E) both A and C

Question

Figure 21- 2 Mechanics of Ventilation
Use Figure 21- 2 to answer the following questions:
-Which muscles) produces) the movement labeled "1"?
A) external intercostals 
B) internal intercostals 
C) rectus abdominis 
D) diaphragm 
E) both A and C

Quizplus · Accepted Answer

The external intercostals are responsible for elevating the ribs during inhalation, which is typically the movement labeled "1" in diagrams of respiratory mechanics.