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Upper Extremity Muscles Essay Preview: Upper Extremity Muscles Report this essay Upper Extremity Muscles IICompartmentsDivided by lateral and medial intermuscular septumAnterior and posteriorAnterior compartment3 nerves:UlnarMedialMusculocutaneousTerminates anterior part of brachiumBiceps brachii (brachium)Two heads: Long: biarticular (crosses 2 joints) muscle → cant be an agonist Always a synergistAssists brachialis in elbow flexionSupraglenoid tubeShortCoracoid processForearm supination, assists elbow flexionMusculocutaneous.
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