For deep, forceful inhalation, accessory muscles of inhalation (inspiration) are:
1) external intercostals
2) internal intercostals
3) sternocleidomastoids
4) scalenes
5) pectoralis majors
6) pectoralis minors
A) 1, 3, 4, 5
B) 3, 4, 6
C) 1, 4, 5, 6
D) 2, 3, 5

Question

For deep, forceful inhalation, accessory muscles of inhalation (inspiration) are: 
1) external intercostals
2) internal intercostals
3) sternocleidomastoids
4) scalenes
5) pectoralis majors
6) pectoralis minors
A) 1, 3, 4, 5
B) 3, 4, 6
C) 1, 4, 5, 6
D) 2, 3, 5

Quizplus · Accepted Answer

During deep or forceful inhalation, accessory muscles such as the sternocleidomastoids, scalenes, and pectoralis minors are recruited to elevate the ribcage and increase thoracic volume, aiding in the inhalation process. The external intercostals also assist in inhalation by elevating the ribs, but the internal intercostals are primarily involved in forced exhalation, not inhalation.

For Deep, Forceful Inhalation, Accessory Muscles of Inhalation (Inspiration) Are