Autonomic innervation of the tongue: a horseradish peroxidase study in the dog

摘要: Autonomic ganglia have been found along the lingual nerve in rostral two-thirds of canine tongue and glossopharyngeal caudal glandular third [4,17,18]. A 30% horseradish peroxidase (HRP) solution was injected throughout these ganglionated areas order to identify origin preganglionic fibers ganglia. These injections resulted ipsilateral retrograde labeling small multipolar neurons lateral reticular formation medulla oblongata. The same labeled cranial cervical ganglion, but sympathetic thoracic spinal cord were not labeled. findings indicated that consist parasympathetic which receive projections from medulla. located within nucleus reticularis parvicellularis and, this location, co-extensive with salivatory after HRP mandibular sublingual salivary glands. degree somatotopic organization group by results regional enzyme confirmed performing unilateral chorda tympani neurectomies prior extensive bilateral HRP.