1. one of a pair of nerves that arises from cervical spinal roots and passes down the thorax to innervate the diaphragm and control breathing; [syn: phrenic nerve, nervus phrenicus]
WordNet (r) 3.0 (2006):
nervus phrenicus
n 1: one of a pair of nerves that arises from cervical spinal
roots and passes down the thorax to innervate the diaphragm
and control breathing [syn: phrenic nerve, nervus
phrenicus]