Which of the following muscles is innervated by the spinal accessory nerve and branches of C3 and C4?

Name: Which of the following muscles is innervated by the spinal accessory nerve and branches of C3 and C4?
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Question

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The trapezius muscle is innervated by the spinal accessory nerve (cranial nerve XI) and also receives motor fibers from the cervical plexus, specifically branches of C3 and C4, which contribute to the motor function and proprioception of the muscle.

Which of the Following Muscles Is Innervated by the Spinal