What are the 4 chambers of the heart?

The right atrium, the left atrium, the right ventricle and the left ventricle.

The inside of the heart is divided into four chambers that receive blood from various parts of the body. The two upper chambers are called the right atrium and the left atrium.The lower two chambers are called the right ventricle and the left ventricle.

The diagram of human heart,showing the four chambers.