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The esophageal plexus is formed by nerve fibers from two sources: 1.branches of the vagus nerve 2.visceral branches of the sympathetic trunk. The esophageal plexus and the cardiac plexus contain the same types of fibers and are both considered thoracic autonomic plexus(es). ==Parasympathetic Fibers== 1. The Vagus nerve delivers two fiber types to the esophageal plexus: * A. Preganglionic Parasympathetic fibers (Preganglionic fibers) - These fibers have their cell bodies located in the dorsal motor nucleus of the vagus and they will synapse on the terminal ganglia in the walls of the esophagus. * B. Afferent fibers- These fibers are primarily concerned with autonomic reflexes and they have their cell bodies in the inferior ganglion of the vagus. Note: These vagal fibers in the esophageal plexus reform to make the anterior vagal trunk (left vagus) and the posterior vagal trunk (right vagus). Anterior and posterior being terms in relation to the esophagus, a mnemonic for which is 'LARP': Left becomes Anterior, Right becomes Posterior. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Esophageal plexus」の詳細全文を読む スポンサード リンク
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