1. Circulatory System

2. Parts of The Circulatory System
• Heart
• Blood
• Blood Vessels

3. Heart
• It is a the size of our fist
• It is near the middle of our chest, slightly to
the left
• Pumps blood all the time

4. Blood
• Transports digested food, oxygen, water and
carbon dioxide

5. Blood Vessels
• Tubes where blood flow

6. Three types of Blood Vessels
• Arteries
• Veins
• Capillaries

7. Arteries
• Carry oxygen-rich blood from the heart to
other parts of the body
• Red in colour

8. Veins
• Carry oxygen-poor blood from all the parts of
our body to our heart
• Blue in colour

9. Capillaries
• Help blood to exchange materials with the
cells of our body
• -Oxygen, digested food and water pass from
the blood through the capillary walls and into
the cells
• -Carbon Dioxide and waste materials
produced by the cells pass through the
capillary walls and into the blood

10. Heart Rate
• Our heart rate will increase when we are
exercising as our heart need to pump blood to
produce more energy.
• Our heart rate will also increase when we are
having fever as our body temperature rises
when we are having fever, so, it needs to be
controlled to prevent overheating. To do
so, our hearts beats faster in order to bring
more blood to the capillaries in our skin so
that heat can be released to the surrounding
air to cool our body down.

11. Videos
• http://www.youtube.com/watch?v=PgI80Ue-
AMo
• http://www.youtube.com/watch?v=XTEJJCPKB
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12. Thank U So Much