upper thoracic splanchnic nerves -->
thoracic cardiac nerves
medical dictionary

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 fibres to, and visceral afferent (pain) fibres from, the heart.

Synonyms: nervi cardiaci thoracici, upper thoracic splanchnic nerves.

(05 Mar 2000)