. Anatomy, descriptive and applied. Anatomy. 1238 THE ORGANS OF DIGESTION front of the aorta. On its lejt side, in the superior mediastinum, the terminal part of the arch of the aorta, the left subclavian artery, the thoracic duct, and left pleiua, while running upward in the angle between it and the trachea is the left recurrent laryngeal nerve; below, it is in relation with the descending thoracic aorta. On its right side are the right pleura and the vena azygos major, which it overlaps. The vagus nerves descend in close contact with it, the right nerve passing down behind, and the left
. Anatomy, descriptive and applied. Anatomy. 1238 THE ORGANS OF DIGESTION front of the aorta. On its lejt side, in the superior mediastinum, the terminal part of the arch of the aorta, the left subclavian artery, the thoracic duct, and left pleiua, while running upward in the angle between it and the trachea is the left recurrent laryngeal nerve; below, it is in relation with the descending thoracic aorta. On its right side are the right pleura and the vena azygos major, which it overlaps. The vagus nerves descend in close contact with it, the right nerve passing down behind, and the left nerve in front of it; the two nerves uniting to form a plexus {plexus oesophageus s. gulae) aroimd the tube. In the lower part of the posterior mediastinum the thoracic duct lies to the right side of the oesophagus; higher up, it is placed behind it, and, crossing about the level of the fourth thoracic vertebra, is continued upward on its left side. LEFT PULMONARY ARTERY LEFT LUNG LEFT BR THORACIC DUCT VAGUS NERVE PLEURA AZYGOS VEI. :::z:iM^ DIAPHRAGM 1 the cervical region and i (Poirier and Charpy.) the posterior mediastinum. Structure.—The cesophagus has four coats—an external or fibrous, a muscular, a sub- mucous, and an internal or mucous coat. The fibrous coat consists of white fibrous connective tissue tha,t supports the other coats and assists in connecting the oesophagus to the surrounding tissues or organs. The muscular coat (tutuca muscularis) is composed of two planes of considerable thickness, an external longitudinal and an internal circular. The longitudinal fibres are arranged, at the commencement of the tube, in three fasciculi— one in front, which is attached to the vertical ridge on the posterior surface of the cricoid car- tilage, and one at each side, which is continuous with the fibres of the Inferior constrictor of the pharynx; as they descend they blend together and form a uniform layer, which covers the outer surface of the tube. Accessory slips o
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanatomy, bookyear1913
