thoracic cardiac nerves

thoracic cardiac branches of thoracic ganglia

[TA] part of the cardiopulmonary splanchnic nerves from the second to fifth segments of the thoracic sympathetic trunk that pass medially and anteriorly to enter the cardiac plexus; they convey postsynaptic sympathetic fibers to, and visceral afferent (pain) fibers from, the heart. Synonym(s): rami cardiaci thoracici gangliorum thoracicorum [TA], nervi cardiaci thoracici, thoracic cardiac nerves, upper thoracic splanchnic nerves

tho·rac·ic car·di·ac nerves

(thōr-as'ik kahr'dē-ak nĕrvz) That part of the cardiopulmonary splanchnic nerves from the second to fifth segments of the thoracic sympathetic trunk where they pass medially and anteriorly to enter the cardiac plexus; they convey postsynaptic sympathetic fibers to, and visceral afferent (pain) fibers from, the heart.
Synonym(s): nervi cardiaci thoracici [TA] .