Now, let's review what we've seen of the heart.
Here's the right atrium, the atrial appendage, the superior vena cava, and the inferior vena cava,
Here's the inter-atrial septum, the fossa ovale, the opening for the coronary sinus, and the tricuspid valve. Here's the right ventricle, here are the papillary muscles, and the chordae tendineae, and the infundibulum.
Here's the pulmonary valve, and the pulmonary trunk, branching into the left pulmonary artery, and the right pulmonary artery. Here's the left atrium. Here are the pulmonary veins, right, and left. Here's the inter-atrial septum again, and the mitral valve.
Here's the left ventricle, the interventricular septum, the left ventricular outflow pathway, the aortic valve, and the aorta.
Here's the left coronary artery, here's the right one, here's the coronary sinus. Here are the pericardium, and pericardial sac.