In-Text Figure Based Questions
-Name the primary muscles of inspiration. (Figure 23-14)
A) internal intercostal muscles and external intercostal muscles
B) diaphragm and internal intercostal muscles
C) diaphragm and external intercostal muscles
D) rectus abdominis and transversus thoracis
E) serratus anterior and rectus abdominus

Question

Quizplus · Accepted Answer

The primary muscles of inspiration are the diaphragm and the external intercostal muscles, as shown in Figure 23-14. Option A is incorrect, as the internal intercostal muscles are involved in forced expiration. Option B is incorrect, as the diaphragm is a muscle of inspiration but the internal intercostal muscles are not primary muscles of inspiration. Option D and E are incorrect as they are not muscles of inspiration.