nucleus of spinal cord nucleus of phrenic nerve UBERON:0016850 nucleus phrenicus columnae anterioris medullae spinalis Neuron cell bodies located in the more medial portions of the anterior horn at cervical levels C3-C7 that innervate the diaphragm via the phrenic nerve. nucleus of phrenic nerve neuronames:2004 phrenic neural nucleus nucleus nervi phrenici nucleus of the phrenic nerve phrenic nucleus of anterior column of spinal cord phrenic nucleus FMA:77458