1. The Heart and Circulatory System 1 st Year Science

2. 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

3. 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!

4. 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

5. http://www.bbc.co.uk/scotland/education/bitesize/standard/ biology/the_body_in_action/the_need_for_energy_rev6.sht ml

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