ANAT 1615 Musculature Breakdown of Arm and Shoulder from Muscle Manual

ANAT 1615 Musculature Breakdown of Arm and Shoulder from Muscle Manual

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Paul Early Musculature Breakdown of Arm and Shoulder from Muscle Manual Muscles of the Shoulder + a few extra Muscle Origin Insertion Action Innervation Blood supply Supraspinatus Supraspinous fossa of the Scapula Greater tubercle of Humerus Abducts at shoulder joint Suprascapular Infraspinatus Infraspinous fossa of the scapula Greater tubercle of the humerus Lateral rotation of arm at shoulder joint Suprascapular Teres Minor Superior lateral border of the scapula Greater tubercle of the humerus Lateral rotation of arm at Shoulder joint; (adduct arm at shoulder) Axillary Subscapularis Subscapular fossa of the Scapula Lesser tubercle of Humerus Medially rotate the arm at the shoulder joint Subscapular Teres Major Inferior lateral border of the scapula (inf 1/3 of dorsal surface) Medial lip of the Bicipital Groove of the humerus At shoulder joint: medial rota- tion, adduction, and extension; (upward rotation of scapula) Lower Subscapular Deltoid Lateral clavicle, acromion Process, and spine of Scapula Deltoid tuberosity of the humerus At shoulder joint: abducts, fle- xes, extends, medial rotation, lateral rotation of arm Axillary Pectoralis Major Medial clavicle, sternum, and costal cartilages of ribs #1-7 lateral lip of the bicipital groove of the humerus At shoulder joint: adduction, medial rotation, and flexion of the arm medial and lateral pectoral Pectoralis Minor Ribs #3-5 Coracoid process of Scapula (medial aspect) At Scapulocostal joint: protraction (abduct) & depresses scapula Elevaes ribs #3-5 at the sterno- costal and costospinal joints meidal pectoral Muscles of the Arm Muscle Origin Insertion Action Innervation Blood Supply Coracho- brachialis Coracoid process of the Scapula (at apex) Medial shaft of the Humerus (mid 1/3) At shoulder joint: flexion and Adduction of the arm Musculo- Cutaneous Biceps Brachii Long head: supraglenoid Tubercle of scapula short head: coracoid pro- cess of scapula (apex) Radial tuberostiy (& bicipital apon- neurosis into deep fascia At shoulder joint: arm flexion (abduction and adduction) radioulnar joint: forearm supination; elbow joint: flexion of the forearm Musculo- cutaneous Brachialis Distal ½ of the anterior shaft of the humerus Ulnar tuberosity (and coronoid process of ulna) elbow joint: forearm flexion musculo- cutaneous Triceps
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This note was uploaded on 11/21/2011 for the course ANAT 1615 taught by Professor Samueldemons during the Fall '10 term at Life Chiropractic College West.

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ANAT 1615 Musculature Breakdown of Arm and Shoulder from Muscle Manual

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