The action of the phrenic nerve. Concept introduction: Phrenic nerve originates in the cervical region of the spinal cord. The signal impulse originating in the brain is transmitted to the regions in the spinal cord, which transfers the nerve impulse ahead in the neurons. Phrenic nerve is an important branch of the cervical plexus formed by the cranial spinal nerves.

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Chapter 14.5, Problem 26LO

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To explain: The action of the phrenic nerve.

Concept introduction: Phrenic nerve originates in the cervical region of the spinal cord. The signal impulse originating in the brain is transmitted to the regions in the spinal cord, which transfers the nerve impulse ahead in the neurons. Phrenic nerve is an important branch of the cervical plexus formed by the cranial spinal nerves.

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