Clean the brachiocephalicus m., which attaches to the brachium and to the neck and head. The muscle has two parts and one of these has two parts for a total of three parts (seen above). The muscle features a clavicular intersection (1), which connects a cleidobrachialis m. to a cleidocephalicus m. The latter has cervical (2) and mastoid (3) parts. The cleidobrachialis m. (4) attaches to the humerus. Other extrinsic limb mm. can be seen: omotransversarius m.(5); trapezius m. (6), latissimus dorsi m. (7), and superficial (8) and deep (9) pectoral mm. Notice the external jugular vein (10).

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