pulmonary veins
The right auricle collects the deoxygenated blood from the vena cava; the left auricle collects the oxygenated blood from the lungs. The right auricle pushes the blood towards the right ventricle; the left auircle pushes the blood towards the left ventricle.
Left auricle pumps the blood to the left ventricle.
Pulmonary veins left /right
It pumps the blood to the left ventricle.
The right auricle, or right atrium, receives deoxygenated blood from the body via the superior and inferior venae cavae, while the left auricle, or left atrium, receives oxygenated blood from the lungs through the pulmonary veins. Structurally, the right auricle has thinner walls compared to the muscular left auricle, which is designed to handle higher pressure from the systemic circulation. Additionally, the right auricle contains the sinoatrial node, the heart's natural pacemaker, while the left auricle plays a role in the heart's blood flow dynamics but does not contain this node.
It travels to the right ventricle passing through the tricuspid valve. Then it travels to the lungs via pulmonary arteries. The oxygenated blood from the lungs returns to the heart (into the left auricle). From the left auricle the blood travels to the left ventricle. The left ventricle pumps it to aorta. The blood travels through the arteries and veins, then it returns to the right auricle of heart.
You mean, what is the function of the auricle? Auricles are ear-like flaps of tissue projecting from the atrial chambers. They function to help increase the capacity of the atria, which in turn, increases the amount of blood that the atria can hold.
The left part...the left auricle & left ventricle
The Auricle increases the volume of the atrium.Right auricle collects the deoxygenated blood and pushes it to the right ventricle. Left auricle collects the oxygenated blood from lungs and pushes it towards left ventricle.
The left auricular appendix (left auricula, left auricle, left atrial appendage) is a conical muscular pouch connected to the left atrium of the heart. It is somewhat constricted at its junction with the principal cavity; it is longer, narrower, and more curved than theright auricular appendix, and its margins are more deeply indented.
I believe it's the right and left brachiocephalic veins
The Pulmonary Artery which takes the deoxygenated blood to the lungs.