Investigating Circulation: the Amazing Heart

The video explains the heart's role in circulating blood throughout the body. It describes the heart's structure, including its chambers and septum, and details the two main phases of the heart's pumping action: diastole and systole. The video also outlines the pathways of blood flow, highlighting how oxygen-depleted blood is oxygenated in the lungs and how oxygen-rich blood is distributed to the body.

What new insight or understanding did you gain from this video?