. Anatomy, descriptive and surgical. left innominate vein, the arch of theaorta, the innominate and left carotid arteries, and the deep cardiac plexus. It liesupon the oesophagus, which is directed to the left near the arch of the aorta; later-ally, in the neck, it is in relation with the common carotid arteries, the lateral lobesof the thyroid gland, the inferior thyroid arteries, and recurrent laryngeal nerves;and in the thorax it lies in the interspace between the pleurae, having the pneumo-gastric nerve on each side of it. The Right Bronchus, wider, shorter, and more horizontal in directio
. Anatomy, descriptive and surgical. left innominate vein, the arch of theaorta, the innominate and left carotid arteries, and the deep cardiac plexus. It liesupon the oesophagus, which is directed to the left near the arch of the aorta; later-ally, in the neck, it is in relation with the common carotid arteries, the lateral lobesof the thyroid gland, the inferior thyroid arteries, and recurrent laryngeal nerves;and in the thorax it lies in the interspace between the pleurae, having the pneumo-gastric nerve on each side of it. The Right Bronchus, wider, shorter, and more horizontal in direction than theleft, is about an inch in length, and enters the right lung opposite the fifth dorsalvertebra. The vena azygos arches over it from behind, and the right pulmonaryartery lies below, and then in front of it. The Left Bronchus is smaller, more oblique, and longer than the right, beingnearly two inches in length. It enters the root of the left lung opposite the sixth 928 ORGANS OF VOICE AND RESPIRATION, Fig. 614. Super ioCornu. Front View of Cartilages of Larynx: the Trachea and Bronchi. dorsal vertebra, about an inch lower than the right bronchus. It passes beneaththe arch of the aorta, crosses, in front of the oesophagus, the thoracic duct and the descending aorta, and has the left pulrno- Fig. 615. Left- Kis&t nary artery lying at first above, and thenin front of it. If a transverse section ismade across the trachea a short distanceabove its point of bifurcation, and abirds-eye view taken of its interior(Fig. 615), the septum placed at thebottom of the trachea and separatingthe two bronchi will be seen to occupythe left of the median line, as was firstshown by Mr. Goodall of Dublin, so thatany solid body dropping into the tracheawould naturally be directed toward theright bronchus; and this tendency is undoubtedly aided by the larger size of this
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