176. Lumbar Region of Back: Cross Section 191. Diaphragm: Thoracic Surface 204. Bronchial Arteries and Veins 214. Thorax: Coronal Section of Heart, Ascending Aorta 229. Esophagus in Situ 230. Topography and Constrictions of Esophagus 231. Musculature of Esophagus 233. Arteries of Esophagus 235. Lymph Vessels and Nodes of Esophagus