★ HNBS Intern Quiz
Which of the following is true about external intercostals?
A. When present with the internal intercostals, the external intercostals will act in expiration only
B. Assists in forced expiration
C. Has fibers that are slanted downward and backward
D. Does not show any activity during normal, quiet breathing
Preview next quiz:
Expulsive form of cough requires which of the following muscles to contract most forcefully:
A. SCM
B. Diaphragm
C. Scalene
D. Abdominals
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