 Okay, so we're looking here at the heart Okay, so we'll start with the main Structures and kind of go through the blood flow as it comes through the heart So as blood comes to enter in the heart comes through your vena cava's. So you have a superior here an inferior down here Okay, the superior vena cava is formed by the two branches here So you have a left Right brachiosaphalic vein and a right brachiosaphalic vein those empty into The right atrium on the right atrium. You can see this kind of flap here over to the side So this is an oracle right oracle Once the blood is in the atrium it gets pumped into the right ventricle So from the right ventricle it's then pumped up into our pulmonary arteries Goes to the lungs comes back. It's now oxygenated and comes through the pulmonary veins pulmonary veins get pumped into the left atrium Left atrium pumps blood into the left Ventricle and from there it get pumped to the rest of the body comes up your ascending aorta Crosses over the transverse aorta and down the descending aorta So that goes down to the main part of the body going up into the cranials and Brachial parts of the body you have these three main arteries here This first one is the brachiosaphalic artery and you have your left common carotid artery and left subclavian artery