<unk>  are splanchnic<unk>  that are postsynaptic and sympathetic. They originate in cervical and upper thoracic ganglia and innervate the thoracic cavity. All major sympathetic<unk>  arise from the stellate ganglia and the caudal halves of the cervical sympathetic trunks below the level of the cricoid cartilage. Parasympathetic<unk>  arise from the recurrent laryngeal<unk>  and the thoracic vagus immediately distal to them. These interconnect with the sympathetic<unk>  to form the ventral and dorsal<unk>  plexuses.
Cardiopulmonary nerves
Neurovascular bundle
Central chemoreceptors
Accelerator nerve
Postganglionic nerve fibers
Preganglionic nerve fibers
Parasympathetic nervous system
Arterial tree