Human anatomy, including structure and development and practical considerations . t nil: \A(;us nkrve. 1271 the root of ihc neck as the vastus crcjsses the anterior surface f)f the subclavian artery,from Avhich point it passes under and behind the artery and ascends. The left nervetakes its orij^in as the vaijus crosses the anterior asjiect of the aortic arch, and afterpassin_y below and behind the arch, lateral to the obliterated ductus arteriosus, ascendsin the superior mediastinum to enter the neck. After entering- the neck the furthercourse of the nerve is the same on both sides. It jiasse


Human anatomy, including structure and development and practical considerations . t nil: \A(;us nkrve. 1271 the root of ihc neck as the vastus crcjsses the anterior surface f)f the subclavian artery,from Avhich point it passes under and behind the artery and ascends. The left nervetakes its orij^in as the vaijus crosses the anterior asjiect of the aortic arch, and afterpassin_y below and behind the arch, lateral to the obliterated ductus arteriosus, ascendsin the superior mediastinum to enter the neck. After entering- the neck the furthercourse of the nerve is the same on both sides. It jiasses upward posterior to thecarotid sheath, either anterior or posterior to the inferior tluroid artery, occujjies the 1k;. 1080. Superior cervical cardiac hranch of sympathetic Middle cervical ganglion Inferior cer\ical ganglion Superior cervical cardiac of vagus Middle and inf. cervical cardiacbranches of sympathetic Recurrent laryngeal nervi Iulmonary branch of vagus Vena azygos major Phrenic nerve Right pulmonary artery Pulmonary veinArjrta Right auricular apiendixPericardium. Superior cervical cardiac branch of sympatheticSuperior cervical cardiac branch of vagusMiddle cervical ganglionMiddle I .•r^i^al (ardiac bran. Ii ..f sympathetic \\\ (of sympathetic ,p<;^ ^ ) nf. lervical cardiac branch^^^T* ^ Inf. cervical ganglion Middle cervical cardiac branch of vagusInf cer\ical cardiacbranch of vagusnerve Left \ agus nerve Recurrent laryngeal nerv Left pulmonary arteryPulmonary veins ulmonary orifice Mesial surface of lungI*ericardium Dissection showing cardiac branches of pneumogastric nerves and of sympathetic cords ; aortic arch and branches*and pulmonary artery partially removed ; pericardium laid open. groove between the oesophagus and the trachea, and, dipping beneath the loweredge of the inferior constrictor of the pharynx, enters the larynx at the inferiormargin of the cricoid cartilage. The asymmetry observed in the first part of the course of the nerves of tlie two


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Keywords: ., bookauthormc, bookcentury1900, bookdecade1910, booksubjectanatomy