Major skeletal muscles paired with their primary action and innervating nerve.
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- Primary action of the deltoid
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Shoulder abduction- Innervation of the deltoid
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Axillary nerve- Primary actions of the pectoralis major
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Adduction and medial rotation of the shoulder- Innervation of the pectoralis major
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Lateral and medial pectoral nerves- Primary actions of the latissimus dorsi
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Adduction, extension, and medial rotation of the shoulder- Innervation of the latissimus dorsi
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Thoracodorsal nerve- Primary action of the supraspinatus
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Initiates shoulder abduction (0 to 15 degrees)- Innervation of the supraspinatus
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Suprascapular nerve- Primary action of the infraspinatus
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External rotation of the shoulder- Innervation of the infraspinatus
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Suprascapular nerve- Primary action of the subscapularis
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Internal (medial) rotation of the shoulder- Innervation of the subscapularis
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Subscapular nerve- Primary action of the biceps brachii
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Flexion of the forearm- Innervation of the biceps brachii
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Musculocutaneous nerve- Primary action of the brachialis
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Flexion of the forearm
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