Which plexus largely innervates the muscles of the neck?

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Multiple Choice

Which plexus largely innervates the muscles of the neck?

Plexuses organize nerve supply by body region, so the neck muscles draw their motor input mainly from the cervical plexus. This network, formed by the ventral rami of C1–C4 (sometimes with a contribution from C5), sends motor branches to many neck muscles—most notably via the ansa cervicalis (C1–C3) to the infrahyoid group and direct branches to other neck musculature. The spinal accessory nerve provides motor to the sternocleidomastoid and trapezius, but the cervical plexus handles the broader neck muscle group and the cutaneous neck innervation. The other plexuses—the brachial for upper limb, and the lumbar and sacral for the lower limb—do not primarily supply neck muscles. Therefore, the cervical plexus is the plexus largely innervating the muscles of the neck.

Which plexus largely innervates the muscles of the neck?

Study for your anatomy test with Netter's Anatomy Practice Test. Utilize questions and illustrated guides to master human anatomy and ace your exam!

Which plexus largely innervates the muscles of the neck?

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