The human heart is a muscle that lies on the left of the chest. It is about the size of a fist. The heart is like a pump that sends blood around your body. Blood gives you the oxygen you need . An average heart pumps about 70 milliliters of blood into your body with every beat. That’s about 5 liters every minute or about 7200 liters every day.
Contents (14 pages)
- Introduction
- Parts of the heart
- Blood circulation
- Heartbeat
- Changing heart rates
- Heart attack
- How to keep your heart healthy
- Exercises
- Word list
- Key
Image: “Diagram of the human heart (clean)” by Wnauta is licensed under CC BY-SA 3.0.