L.O to learn how the heart works and how It pumps blood around the body.

The human body has a double circulatory system; the first pumps deoxygenated blood to the lungs then the second pumps oxygenated blood to the rest of the body.

This illustration will show that in a very simplified manner.

circulatory system


The Heart

The heart contracts to pump blood around the body

The heart consists of a right side and a left side. Both sides have an atria and a ventricle
Blood flows into the right atria and then enters the right ventricle. When the heart contracts the blood flows out of the right ventricle and enters the lungs, once the blood has been oxygenated, it enters the left atrium, then the left ventricle. When the heart contracts gains the blood is pumped around the body

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