What are the four chambers of the heart and which side receives/delivers oxygenated or deoxygenated blood?

The four chambers of the heart are the upper two atria (atrium for singular) and the lower two ventricles. The atria first receive the blood, which is then pumped to its destination via the ventricles. They are both separated into left and right.

The left side of the heart, specifially the left atrium, receives oxygenated blood which is then delivered to the rest of the body via the left ventricle. The right side of the heart, specifically the right atrium, receives deoxygenated blood which is then pumped to the lungs via the right ventricle.