Which side of the heart receives blood from the lungs?

The side of the heart that receives blood from the lungs is the left side. This is where oxygen-rich blood returns from the lungs via the pulmonary veins. Once this blood is received, it enters the left atrium and then moves into the left ventricle, where it is pumped out to the rest of the body through the aorta.

This process is part of the pulmonary circulation, which specifically involves the lungs and heart. The right side of the heart, in contrast, handles deoxygenated blood returning from the body, sending it to the lungs for oxygenation. This distinction between the roles of the left and right sides of the heart is crucial for understanding the overall function of the cardiovascular system.