214. Thorax: Coronal Section of Heart, Ascending Aorta 215. Coronary Arteries and Cardiac Veins 216. Coronary Arteries: Imaging 217. Right Atrium and Ventricle 218. Left Atrium and Ventricle 219. Valves and Fibrous Skeleton of Heart 220. Valves and Fibrous Skeleton of Heart (continued) 221. Atria, Ventricles, and Interventricular Septum 222. Conducting System of Heart