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A&P1 Muscles 4of11

Muscles that Move the Pectoral Girdle

MuscleOriginInsertionAction
Trapezius Occipital bone and spines of cervical and thoracic vertebrae Clavicle, spine, and acromium process of scapula Rotates scapula - various fibers raise scapula, pull the scapula medially, or pull scapula and shoulder downward
Serratus anterior Outer surface upper ribs Ventral surface of scapula Pulls scapula anteriorly and downward
Pectoralis minor Sternal ends of upper ribs Coracoid process of scapula Pulls scapula forward and downward or raises ribs
Levator scapulae Transverse processes of cervical vertebrae Medial margin of scapula Elevates scapula
Created by: DevilDoc