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Arm Anatomy
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Muscles of the Arm
Muscle Innervation Origin Insertion Action Nerve Root
1 Coracobrachialis Musculocutaneous Coracoid mid.humerus medial Flexion, adduction C5,6,7 lat cord
2 Biceps Musculocutaneous Coracoid(SH), Supraglenoid (LH) Radial tuberosity Supination, flexion C5,6 lat cord
3 Brachialis Musculocutaneous-medial, radial lateral Ant. Humerus Ulnar tuberosity (ant) Flexes forearm C5,6 lat/post cord
4 Triceps Radial Infraglenoid(LH), Post.Humerus(lat H.), Post. Humerus (MH) Olecranon Extends forearm C6,7,8,T1 post cord
Smith and Nephew

Nerves

Arteries and Veins
Anterolateral Approach Posterior Approach
Anteromedial Approach Deltopectoral Approach
Humerus Anterior Muscles Anatomy Humerus Posterior Muscle Anatomy
Arm Cross Sections Arm Neurovascular Anatomy
Arm Anatomy Humerus Bony Anatomy
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