innervates innervates neuron projection bundle heart autonomic nerve plexus cardiac nerve plexus http://upload.wikimedia.org/wikipedia/commons/7/77/Gray838.png UMLS:C0459528 EMAPA:37460 FMA:6628 NCIT:C52833 MA:0001138 autonomic nerve plexus of heart heart autonomic plexus SCTID:280511002 cardiac plexus plexus cardiacus UBERON:0002008 autonomic plexus of heart heart autonomic nerve plexus Wikipedia:Cardiac_plexus A plexus of nerves situated at the base of the heart that innervate the heart.