What is your circulatory system made up of?

What does the circulatory system do?

How many blood vessels do we have in our body?

Name them.

What do arteries do?

How thick are capillary walls?

Why are they one cell thick?

What do veins do?

What happens if you bump yourself hard?

How big is the heart?

Where is it found?

What muscle is the heart made up of?

How many circuits can be found in the heart?

What does each one do?

What is oxygenated blood

What is deoxygenated blood?

What is cholesterol?

What happens if you have too much cholesterol in your body?

What are four things found in blood?

What is Haemoglobin