The video explains the heart's role as a vital muscle that pumps blood throughout the body. It describes the heart's structure, including its chambers and valves, and how blood flows through the heart to the lungs for oxygenation. The video also highlights the differences between the heart's right and left sides and the importance of heart valves in maintaining unidirectional blood flow, which produces the heartbeat sound.

What is the primary function of the heart?

Describe the structure of the heart, including its chambers.

How does the right side of the heart function in the circulatory system?

What distinguishes the left side of the heart from the right side?

Explain the role of heart valves in blood circulation.