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bccota 25 ch 7/8

BCC OTA 25 Muscles of the shoulder/sh.girdle

Questionorigininsertionaction
Subscapularis Subscapular fossa of the scapula Lesser tubercle of humerus Shoulder medial rotation
Coracobrachialis Coracoid process of the scapula medial surface of the humerus near the midpoint Stabilizes the shoulder joint
Anterior Deltoid Lateral 3rd of the clavicle Deltoid tuberosity of the humerus Shoulder abduction, flexion, medial rotation, horizontal abduction
Middle Deltoid Acromium process Deltoid tuberoisity of the humerus Shoulder abduction
Posterior Deltoid Spine of scapula Deltoid tuberoisity of humerous Shoulder abduction, extension, lateral rotation, horizontal abduction
Supraspinatus Supraspinous fossa of the scapula Greater tubercle of the humerus Shoulder abduction
Pecoralis Major Medial 3rd of clavicle and sternum at costal cartilage of the first 6 ribs Lateral lip of bicipital groove of humerus Shoulder adduction, medial rotation, horizontal addution
Latissimus Dorsi Spinous processes of T-7-L5, posterior sacral surface, iliac crest, & lower 3 ribs Medial lip of bicipital groove of humerus Shoulder extension adduction, medial rotation
Teres Major Auxilary border of scapula near inferior angle Crest below lesser tubercle (next to latissimus dorsi muscle attachment) Shoulder extensiion abduction and medial rotation
Upper Trapezius Occipital Protuberance & Spinous Processes of upper cervical vertebrae Lateral end of clavicle and the acromion process scapular elevation and upward rotation
Middle Trapezius Spinous processes of C 7-T3 Scapular spine Scapular retraction
Lower Trapezius Spinous processes of mid/lower thoracic vertebrae Base of the scapular spine Scapular depression and upward rotation
Levator Scapula Transverse processes of C1-C4 Vertebral border of scapula btn superior angle and spine Scapular elevation and downward rotation
Rhomboid Muscles Spinous processes of C7-T5 Vertebral border of scapula btn spine and inferior angle Scapular retraction, elevation and downward rotation
Serratus anterior Lateral surface of upper 8 ribs Vetebra border of scapula, anterior surface Scapular protraction and upward rotation, "prevents winging"
Pectoralis Minor Anterior surface, 3rd-5th ribs Coracoid process of scapula Scapular depression, protraction, downward rotation and tilt
Infraspinatus Infraspinous fossa of scapula greater tubercle of humerous shoulder lateral rotation, horizontal abduction
Teres Minor Auxilary border of scapula Greater tubercle of humerus Shoulder lateral rotation, horizontal abduction
Created by: challo222