Muscle of expiration
Correct Answer: Internal intercostal
Description: MUSCLE OF INSPIRATION: Quiet: Diaphragm External intercostals Interchondral pa of internal intercostal of contralateral side. Deep: Erector spinae Scalene muscles Pectoral muscles Serratus anterior MUSCLE OF EXPIRATION: Quiet: Passive process d/o inherent quality of lungs Forced: Muscles of anterior abdominal wall with internal intercostal (except interchondral pa)
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Anatomy
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