SELECTED+SUPERFICIAL+HUMAN+MUSCLES+(3)2010.docx - SELECTED...

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SELECTED SUPERFICIAL HUMAN MUSCLES Table 1: Muscles of the head and neck region. Muscle Principal Origin/Insertion Action 1. Occipitofrontalis (epicranius) Epicranial aponeurosis Raises eyebrows, wrinkles forehead 2. Orbicularis oris skin at corners of mouth closes lips 3. Buccinator maxilla/orbicularis oris sucking 4. Orbicularis oculi orbit/orbit closes eyes 5. Masseter zygomatic arch/mandible chewing 6. Temporalis parietal/coranoid process of mandible chewing 7. Platysma Rib & scapula/mandible Depresses mandible 8. Sternocleidomastoid sternum + clavicle/mastoid turns head R or L, flexes neck Table 2. Muscles of the Abdomen Muscle Principal Origin/Insertion Action 9. Rectus abdominus pubis/rib cartilages Compresses abdomen, flexes vertebral column 10. External oblique ribs/linea alba compresses abdomen 11. Internal oblique iliac crest/rib cartilages compresses abdomen 12. Transverse abdominus iliac crest/linea alba compresses abdomen Table 3. Muscles of the Chest. (Deep) Thoracic - deep Muscle Principal Origin/Insertion Action 13. External intercostals adjacent ribs elevates rib cage in inhalation 14. Internal intercostals adjacent ribs depresses rib cage 15. Pectoralis minor ribs #3-5 /coracoid of scapula moves scapula anteriorly, elevates rib cage 1

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