Human Anatomy: Muscle Groups

Human Anatomy

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Muscle Function & Other Pertinent Medical Information
ORIGIN: Pubic crest and pubic symphysis
INSERTION: 5, 6, 7 costal cartilages, medial inferiorcostal margin and posterior aspect of xiphoid
ACTION: Flexes trunk, assists forced expiration and raise intra-abdominal pressure
NERVE: Anterior primary rami (T7-12)

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