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Heart and Circulatory System
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Slide 1

The Heart and Circulatory System

The Heart and Circulatory System

1st Year Science

Slide 2

True or False?

True or False?

Arteries carry blood from the heart

Arteries carry oxygenated blood

Capillaries connect arteries and veins

Capillaries have very thick walls

Veins have no valves

Capillaries have valves to prevent the backflow of blood

Veins have a large space inside

Arteries carry de-oxygenated blood

Veins carry blood towards the heart

Slide 3

What does the heart do?

What does the heart do?

The heart is a muscle that pumps blood around the body

It pumps oxygenated blood from the lungs around the body

It pumps deoxygenated blood from the body back to the lungs

Now look at the heart animation!

Slide 4

Looking at the heart

Looking at the heart

The right side of my heart pumps blood to my lungs

The left side of my heart pumps blood to the rest of my body

The heart contains four valves to stop the backflow of blood

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