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21 Cards in this Set
- Front
- Back
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Muscle
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Actions`
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Pectoralis Major
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Adduct, medially rotate, flex, and extend arm
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Pectoralis Minor
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Depress and protract scapula
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Subclavius
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Depresses clavicle
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Trapezius
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Retracts scapula; Upward (lateral) rotation of scapula when upper and lower fibers are acting together; Depress scapula when lower fibers are acting alone; Elevate scapula when upper fibers are acting alone
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Latissimus dorsi
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Adduct, medially rotate, and extend arm
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Rhomboid major
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Retract scapula; downwardly rotate (medial rotation)
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Rhomboid minor
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Retract scapula; downwardly rotate (medial rotation)
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Levator scapulae
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Elevate scapula; downwardly rotate scapula
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Supraspinatus
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Abduct arm (initiator)
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Infraspinatus
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Laterally rotate arm
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Teres minor
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Laterally rotate arm
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Teres major
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Adducts and medially rotates arm
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Subscapularis
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Medially rotate and adduct arm
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Deltoid
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Anterior fibers: flex and medially rotate arm; Lateral fibers: abduct arm; Posterior fibers: extend and laterally rotate arm
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Serratus anterior
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Protract scapula; upwardly rotate scapula
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Coracobrachialis
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Adducts and flexes arm
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Biceps brachii
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Flexes and supinates the forearm. (Flexes the supinated forearm; supinates the flexed forearm)
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Brachialis
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Flexes the forearm, independent of position
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Triceps brachii
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Extends forearm
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Anconeus
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Extends the forearm (small muscle and therefore not a powerful action)
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