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Definition of Phrenic nerve
1. Noun. One of a pair of nerves that arises from cervical spinal roots and passes down the thorax to innervate the diaphragm and control breathing.
Medical Definition of Phrenic nerve
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1. Noun. One of a pair of nerves that arises from cervical spinal roots and passes down the thorax to innervate the diaphragm and control breathing.
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