cervical (nerve) plexus
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cer·vi·cal (nerve) plex·us[TA]
formed by loops joining the adjacent ventral primary rami of the first four cervical nerves and receiving gray communicating rami from the superior cervical ganglion; it lies deep to the sternocleidomastoid muscle and sends out numerous cutaneous, muscular, and communicating rami.
Synonym(s): plexus cervicalis [TA]