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All major sympathetic cardiopulmonary nerves arise from the stellate ganglia and the caudal halves of the cervical sympathetic trunks below the level of the cricoid cartilage. Parasympathetic cardiopulmonary nerves arise from the recurrent laryngeal nerves and the thoracic vagus immediately distal to them. These interconnect with the sympathetic cardiopulmonary nerves to form the ventral and dorsal cardiopulmonary plexuses.
Janes, R. D.; Brandys, J. C.; Hopkins, D. A.; Johnstone, D. E.; Murphy, D. A.; Armour, J. A. (1986). "Anatomy of human extrinsic cardiac nerves and ganglia". The American Journal of Cardiology. 57 (4): 299–309. doi:10.1016/0002-9149(86)90908-2. PMID3946219.