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Neck Muscles
...  – these muscles are found in the posterior skull and the temples, and are used for extending and rotating the head. These small muscles do most of the work for moving the head around. trapezius muscles – these muscles can do multiple actions, including pulling the scapula towards the body as well as neck extension. Sternocleidomastoid muscles – these muscles,  ...

Accessory Nerve
...  of the vagus nerve instead of the accessory nerve. The spinal accessory nerve from the central nervous system provides motor innervation for two muscles of the neck. These two muscles are the trapezius muscle (responsible for the elevation of the shoulder and abduction of the scapula) and the sternocleidomastoid muscle (tilts and rotates the head). What happens when the nerve is damaged  ...

Brachial Nerve Plexus
...  is the one responsible for the rotational movements of the forearm and the hand. The function of the Brachial nerve plexus involves the muscular innervations of the upper limb, except for the trapezius muscle and the skin area near the axilla, as these areas are innervated by the intercostrobrachial nerve. Injuries to the Brachial Plexus can occur as a result of shoulder trauma,  ...


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