Abstract
An: 2010, Nr.2, Articol Nr. 8
Title: 

ANATOMICAL PATHWAYS OF TRACHEAL INNERVATION IN THE NECK

Authors: 

      Anca Laura Boşcu, M.C. Niculescu, Adelina Maria Jianu - Chair of Anatomy and Embryology, ““Victor Babeș” University of Medicine and Pharmacy, Timișoara
      D. Păduraru - Chair of Anatomy, ““Gr.T. Popa”” University of Medicine and Pharmacy, Iași
      M.C. Rusu - Discipline of Anatomy and Embryology, Chair MD 01, Faculty of Dental Medicine, ““Carol Davila”” University of Medicine and Pharmacy, Bucharest
      ANATOMICAL PATHWAYS OF TRACHEAL INNERVATION IN THE NECK (Abstract): Usually the autonomic innervation of the cervical trachea is simply described as parasympathetic, supplied by the vagus and recurrent nerves and sympathetic, from the cervical chain and no other details on the anatomical interferences of these two systems are taken into account even though in the ancient French anatomy several morphological possibilities for sympatho-vagal anastomoses are described. We aimed to investigate and detail these morphologies. We dissected bilaterally 35 human adult cadavers by conventional techniques, to expose the elements on the side of the cervical trachea and at the level of the scalenovertebral triangle; the results were documented photographically. The laryngeal recurrent nerve (RLN) was bilaterally evidenced. The sympathetic chains were identified in the prevertebral layer, with variable presence of the middle and/or intermediate ganglia and the corresponding cardiac nerves. The RLN was variably anastomosed with the middle and/or intermediate ganglion of the sympathetic chain or directly with the chain in the absence of ganglia, in 42 sides it anastomosed with the superior cardiac cervical nerves, while in 26 sides it was linked to the middle cervical cardiac nerve. Also vagal-recurrential anastomoses were present, either of the RLN with the vagal cardiac branches or between the cardiac branches of both these nerves. As so, an autonomic layer of the recurrential anastomoses with the sympathetic chain and nerves and with the vagal branches was defined, constantly present between the carotid sheath and the prevertebral fascia. This extrinsic paravisceral autonomic plexus mixes the autonomic signal provided for the cervical viscera, including the trachea.
Key words: AUTONOMIC SYSTEM; RECURRENT NERVE; VAGUS NERVE; SYMPATHETIC CHAIN; CERVICAL CARDIAC NERVES
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