The blood in the left atrium comes from the pulmonary vein, that is, from the lungs. It's oxygenated blood, innit?
The blood in the right atrium comes from the vena cava (either superior or inferior) which actually takes deoxygenated blood from the body into the heart, where it is later sent to the lungs for oxygenation... and so on.
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.
It pumps the blood to the left ventricle.
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.
pulmonary veins
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.
the left chambers of heart receives oxygenated blood i.e .left auricle and left ventricle
Blood entering the left atrium is oxygenated blood coming from the lungs that is pumped throughout the rest of the body.
First the impure blood from all the body parts reach the right auricle and then into right ventricle.From right ventricle it is carried to lungs through PULMONARY ARTERY.In lungs,it gets purified[alveoli do the purification] and then it is sended to left auricle through PULMONARY VEIN.From left auricle it flows into left ventricle and then to all the body parts through systemic aorta.