Diaphragm- contracts and the external intercostals which contract
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What muscles are involved in active inspiration?
The diaphragm, external intercostals, sternocleidomastoid and scalene muscles
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What muscles are involved in resting expiraton?
Relaxation of diaphragm and external intercostals
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What muscles are involved in active expiration?
Relaxation of diaphragm and external intercostals as well as contraction of internal intercostals and external oblique, internal oblique, rectus abdominis and transversus abdominis
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