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3 Cards in this Set
- Front
- Back
What are the two most superficial muscles of the shoulder |
trapezius and deltoid muscles |
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State the origin, insertion, inner cation and function of the shoulder muscles |
Back (Definition) |
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Muscles of the posterior scapula region |
Table 1.2 Muscles of the posterior scapular region (spinal segments in bold are the major segments innervating the muscle) Muscle Origin Insertion innervation Function Supraspinafus Medial two-thirds of the Most superior facet on the greater Suprascapular nerve Rotator cuff muscle; participates supraspinous fossa of the scapula tubercle of the humerus (Cs. C6) in abduction of the glenohumeral joint; stabilization of and the deep fascia that covers glenohumeral joint the muscle Infraspinatus Medial fwo-thirds of the Middle facet on posterior surface Suprascapular nerve Rotator cuff muscle, lateral infraspinous fossa of the scapula of the greater tubercle of the (Cs. C6) rotation of arm at the and the deep fascia that covers humerus glenohumeral joint,; stabiliyion of glenohumeral joint the muscle Teres minor Upper two-thirds of a flattened inferior facet on the posterior Axillary nerve Rofafor cuff muscle; lateral strip of bone on the posterior surface of the greater tubercle of (Cs. C6) rotation of arm at the glenohumeral joint; stabilization surface of the scapula immediately the humerus of glenohumeral joint adjacent to the lateral border of the scapula Teres major Elongate oval area on the Medial lip of the infertubercular inferor subscapular Medial rotation and extension of posterior surface of the inferior sulcus on the anterior surface of nerve (CS. C6, C7) the arm at the glenohumeral joint; stabilization of glenohumeral joint angle of the scapula the humerus Long head of infraglenoid tubercle on scapula Common tendon of insertion with Radial nerve Extension of the forearm at the medial and lateral heads on the (C6. C7. CB) elbow joint; accessory adductor triceps brachi olecranon process of ulna and extensor of the arm at the glenohumeral joint |