cardiac nerve

noun

Medical Definition of cardiac nerve

: any of the three nerves connecting the cervical ganglia of the sympathetic nervous system with the cardiac plexus:

a : one arising especially from the inferior cervical ganglion or the stellate ganglion

— called also inferior cardiac nerve

b : one arising especially from the middle cervical ganglion

— called also middle cardiac nerve

c : one arising especially from the superior cervical ganglion

— called also superior cardiac nerve