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The Shoulder Joint TEST MONDAY

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Presentation on theme: "The Shoulder Joint TEST MONDAY"— Presentation transcript:

1 The Shoulder Joint TEST MONDAY

2 Anterior Shoulder Muscles
Coracobrachialis Pectoralis Major Subscapularis Biceps Brachii


4 Biceps Brachii Origin Short head: coracoid process of scapula Long head: supraglenoid tubercle of scapula Insertion Tuberosity of radius Action Flexion of the elbow and shoulder, Supinates forearm ***the long head is the “5th rotator cuff”


6 Coracobrachialis O: Coracoid process
I: Anteromedial surface of midshaft of humerus Actions: (WEAK!) Flexion Adduction of the shoulder



9 Pectoralis Major Origin: Insertion: intertubercular groove Actions
Medial two-thirds of clavicle Sternum Insertion: intertubercular groove Actions Upper fibers (Clavicular) Flexion Horizontal Adduction Lower fibers (Sternal) Internal/medial Rotation Horizontal adduction



12 Subscapularis O: Subscapular fossa
I: Lesser tubercle and crest of humerus Actions: Internal Rotation Stabilization Anterior Rotator Cuff Muscle.


14 Superior Shoulder Muscles
Deltoid Supraspinatus


16 Deltoid Origin Insertion – deltoid tuberosity Actions
Lateral 1/3 of clavicle (Anterior fibers) Acromion process (Middle fibers) Spine of scapula (Posterior fibers) Insertion – deltoid tuberosity Actions Anterior –Flexion Middle – Abduction Posterior –Extension



19 Supraspinatus O: Supraspinous fossa I: Greater tubercle Action:
Abduction Stabilization Superior Rotator Cuff Muscle. Most injured rotator cuff muscle


21 Inferior Shoulder Muscles
Latissimus Dorsi Teres Major

22 Latissimus Dorsi O: Spinous process of lower 6 thorasic and all lumbar and sacral vertebrae; iliac crest I: Intertubercular groove Actions: Adduction Internal Rotation



25 Teres Major O: Inferior angle of scapula I: Intertubercular groove
Actions: Adduction Internal rotation “Lats little helper”


27 Posterior Shoulder Muscles
Infraspinatus Teres Minor Triceps Brachii


29 Triceps Brachii Origin
Long head: infraglenoid tubercle of scapula Lateral head: posterior surface of humerus, Medial head: posterior surface of humerus, Insertion Olecranon process of ulna Action Chief extensor of elbow (long head extends the shoulder)


31 Infraspinatus O: Infraspinous fossa I: Greater tubercle Actions:
External rotation Stabilization Posterior Rotator Cuff Muscle Second most commonly injured rotator cuff muscle



34 Teres Minor O: lateral border of scapula I: Greater tubercle Actions:
External rotation Stabilization Posterior Rotator Cuff Muscle


36 Muscles of the scapula only


38 Trapezius Origin occipital bone, nuchal ligament, and spinous processes of C7 - T12 vertebrae Insertion Lateral third of clavicle, acromion, and spine of scapula Action superior fibers elevate, middle fibers retract, inferior fibers depress scapula;


40 Levator Scapula Origin C1 - C4 vertebrae Insertion Superior angle
Action Elevates scapula

41 Rhomboid major and minor

42 Rhomboid major and minor
Origin Minor: spinous processes of C7 and T1 vertebrae Major: spinous processes of T2 - T5 vertebrae Insertion Medial border of scapula Action Retract scapula


44 Serratus Anterior Origin the eight upper frontal ribs
Insertion lateral border of scapula Action protracts scapula


46 Name the muscle. Coracobrachialis Name the action Flexion and Adduction of the shoulder

47 Name the muscle. Pectoralis Major Function Horizontal Adduction Internal roatation

48 Name the muscle. Subscapularis Name the action Internal rotation of the shoulder

49 Name the muscle. Deltoid Name the action Abduction of shoulder (middle third) Flexion (anterior deltoid) Extension (posterior deltoid)

50 Name the muscle. Infraspinatus Name the action External rotation

51 Name the action Name the muscle. Adduction of arm Teres Major

52 Name the muscle. Teres Minor Name the action if the humerus move directly to the posterior Extension of the shoulder

53 Name the muscle. Supraspinatus Name the action Abduction of the shoulder

54 Coracobrachialis Pect. Major Subscapularis Deltoid

55 Supraspinatus Teres Major Infraspinatus Teres Minor

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