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12 Cards in this Set
- Front
- Back
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Supraspinatus |
Origin Supraspinous fossa of scapula Insertion Greater tubercle of humerus Action Abduction of humerus Inervation Suprascapular nerve |
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Rhomboids: major and minor |
Origin C7 and t1-t5 (spinous processes) Insertion Spine of scapula and Vertebral border of scapula Action Scapular retraction and downward rotation Inervation Dorsal Scapular nerve |
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Deltoids |
Origin Anterior: Lateral third of clavicle Middle: Lateral acromion Posterior: Spine of scapula
Insertion Deltoid tuberosity of humerus
Action Anterior: Flexion, horizontal adduction, internal rotation of humerus Middle: Abduction of humerus to 90 degrees Posterior: Extension, horizontal Abduction, external rotation of humerus
Inervation Axillary nerve |
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Pectoralis Minor |
Origin Anterior 2-5 ribs Insertion Coracoid process of scapula Action Protraction, depression, downward rotation of scapula Inervation Medial pectoral nerve |
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Coracobrachialis |
Origin Coracoid process of scapula Insertion Middle humeral shaft Action Flexion and adduction of humerus Inervation Musculocutaneous nerve |
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Infraspinatus |
Origin Infraspinous fossa of scapula Insertion Greater tubercle of humerus Action External rotation and extension of humerus Inervation Suprascapular nerve |
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Trapezius |
Origin Occipital protuberance, c2-t12 (spinous processes) Insertion Upper: Lateral clavicle, acromion Middle: Spine of scapula Lower: Spine of scapula Action Upper: Elevation, upward rotation, retraction Middle: Retraction Lower: Depression, upward rotation, retraction Inervation Spinal accessory nerve, c3-4 |
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Teres Major |
Origin Inferior angle of scapula (dorsal surface) Insertion Bicipital groove of humerus Action Extension, internal rotation, adduction of humerus Inervation Lower subscapular nerve |
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Subclavius |
Origin 1st rib Insertion Lower surface of clavicle Action Depression of Lateral clavicle Inervation Nerve to subclavius |
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Latissimus Dorsi |
Origin Lumbodorsal fascia, Iliac Crest, Inferior angle of scapula, ribs 9-12 Insertion Bicipital groove of humerus Action Extension, internal rotation, adduction of humerus Inervation Thoracodorsal nerve |
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Levator scapula |
Origin C1-4 (transverse processes)
Insertion Vertebral border of scapula
Action Elevation of scapula
Inervation Dorsal Scapular nerve, c3-4 nerves to levator scapula |
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Subscapularis |
Origin Subscapular fossa of scapula
Insertion Lesser tubercle of humerus
Action Intenal rotation of humerus
Inervation Upper and lower subscapular nerve |
