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Which of the following muscles is NOT used in exhalation (Breathing out)?
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Internal intercostals
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External/Internal obliques
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Rectus Abdomius
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Sternocleidomastoid
That's Correct!
It's Wrong!
The sternocleidomastoid muscle is not used in exhalation. This muscle is located in the neck and is responsible for tilting and rotating the head. During exhalation, the primary muscles involved are the internal intercostals, which help to depress the ribcage, and the external/internal obliques and rectus abdominis, which aid in compressing the abdomen and pushing air out of the lungs. Therefore, the sternocleidomastoid muscle is not utilized in the process of breathing out.
