The principal muscles of the thorax associated with inspiration are the _____ and the external intercostals.

The principal muscles of the thorax associated with inspiration are the _____ and the external intercostals.

The principal muscles of the thorax associated with inspiration are the _____ and the external intercostals.




a. Internal oblique
b. Diaphragm
c. External oblique
d. Subcostal






Answer: B


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