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13 Cards in this Set
- Front
- Back
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Pectoralis major |
Origin: clavicle, sternum, costal cartilages of upper ribs Insertion: interbercular groove of humerus Action: flexes, adducts and rotates arm medially |
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Teres major |
Origin: lateral border of scapula Insertion: interbercular groove of humerus Action: extends, adducts, and rotates arm medially |
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Latissimus dorsi |
Origin: spines of sacral, lumbar, and lower thoracic vertebrae, iliac crest and lower ribs Insertion: interbercular groove of humerus Action: extends, adducts, and rotates arm medially, pulls shoulder downward and back |
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Supraspinatus |
Origin: posterior surface of scapula above spine Insertion: greater tubercle of humerus Action: abducts the arm |
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Deltoid |
Origin: acromion process, spine of scapula, and clavicle Insertion: deltoid tuberosity of humerus Action: abducts, extends, and flexes arm |
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Infraspinatus |
Origin: posterior surface of scapula below spine Insertion: greater tubercle of humerus Action: rotates arm laterally |
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Teres minor |
Origin: lateral border of scapula Insertion: greater tubercle of humerus Action: rotates arm laterally |
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Trapezius |
Origin: occipital bone and spines of cervical and thoracic vertebrae Insertion: clavicle, spine, and acromion process of scapula Action: rotates scapula, various fibers raise scapula, pull scapula medially, pull scapula and shoulder downward |
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Rhomboid major |
Origin: spines of upper thoracic vertebrae Insertion: medial border of scapula Action: retracts, elevates, and rotates scapula |
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Rhomboid minor |
Origin: spines of lower cervical vertebrae Insertion: medial border of scapula Action: retracts and elevates scapula |
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Levator scapulae |
Origin: transverse processes of cervical vertebrae Insertion: medial margin of scapula Action: elevates scapula |
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Serratus anterior |
Origin: outer surfaces of upper ribs Insertion: ventral surface of scapula Action: pulls scapula anteriorly and downward |
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Pectoralis minor |
Origin: sternal ends of upper ribs Insertion: coracoid process of scapula Action: pulls scapula forward and downward or raises ribs |
