Superficial fascia has been removed to reveal skeletal muscles and associated deep fascia. Muscles that have one attachment on a limb and the other attachment on the trunk or neck are called extrinsic limb mm. (asterisks). When they contract, extrinsic limb mm. move either the body (when the limb is fixed by bearing weight) or the limb (when it is not bearing weight). The external jugular vein (1) has been preserved.

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