Biology
Blood Flow Through the Heart
The heart is a muscular pump with four chambers. Humans have a double circulation: blood passes through the heart twice in every complete trip around the body. The right side pumps blood to the lungs, and the left side pumps it to the body.
Body → right side → lungs → left side → body
- Learn the parts of the heart.
- Guide a drop of blood around the whole circuit.
- Colour the heart: blue for deoxygenated, red for oxygenated blood.
- Watch the heartbeat and its valves.
- Take a five-question quiz.
TV Tricuspid valve · PV Pulmonary valve · MV Mitral valve · AV Aortic valve. Blue = deoxygenated blood, red = oxygenated blood.