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Cervical spinal nerve 4: Wikis


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The cervical spinal nerve 4 (C4) is a spinal nerve of the cervical segment.[1].

It originates from the spinal column from above the cervical vertebra 4 (C4).

Its control of the thoracic diaphragm has inspired a medical mnemonic: "Cut C4, breathe no more."


  1. ^ American Medical Association Nervous System -- Groups of Nerves


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