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Musculoskeletal Anat

Pectoral Girdle and Arm @ Shoulder muscle names, origin, insertion, and action

MuscleOriginInsertionAction
Levator scapulae Upper cervical vertebrae (transverse processes) Superior angle of scapula Medial border of scapula Scapula elevation
Serratus anterior Ribs 1-8 Inferior angle of scapula Medial border of scapula Scapula protraction Upward rotation of glenoid cavity
Deltoid Clavicle Acromion process Spine of scapula Deltoid tuberosity on shaft of humerus Arm abduction @ shoulder Arm flexion and extension Medial and Lateral rotation @ shoulder
Pectoralis major Clavicle Sternum Ribs 1-6 Intertubercular groove of humerus Arm adduction Arm flexion @ shoulder Medial rotation @ shoulder
Latissimus dorsi Lower vertebrae (spinous processes) Sacrum Iliac crest Intertubercular groove of humerus Arm extension Adduction Medial rotation @ shoulder
Coracobrachialis Coracoid process of scapula Humerus Arm flexion Arm adduction @ shoulder
Teres major Inferior angle of scapula Intertubercular groove of humerus Arm adduction, Medial rotation, Extension @ shoulder
Supraspinatus (part of rotator cuff) Supraspinous fossa of scapula Greater tubercle of humerus Arm abduction @ shoulder
Infraspinatus (part of rotator cuff) Infraspinous fossa of scapula Greater tubercle of humerus Arm lateral rotation @ shoulder
Teres minor (part of rotator cuff) Posterior (dorsal) lateral scapula Greater tubercle of humerus Arm lateral rotation @ shoulder
Subscapularis (part of rotator cuff) Subscapular fossa of scapula Lesser tubercle of humerus Arm medial rotation @ shoulder
Trapezius Occipital bone Thoracic vertebrae (spinous processes) Spine Acromion of scapula Clavicle Scapula elevation, retraction, and depression
Rhomboids Upper thoracic vertebrae (spinous processes) Medial border of scapula Scapula adduction and retraction Downward rotation of glenoid cavity
Created by: meganntaylor
 

 



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