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Transcript
Your heart is a muscle about the size of
your fist.
It is constantly beating, on average
about 1 beat every second.
Open and close
your fist, once
every second. Do
you get tired
quickly?
Lesson Outcomes
• What are the four parts of the heart called?
• Why does the heart need valves in it?
• Where does each side of the heart pump
blood?
• Why is the left side of the heart thicker
than the right side?
• Why does the heart need it’s own blood
supply if it is full of blood all day?
• What would happen if that blood supply was
blocked by fat and blood clots?
Right
side
Left
side
Video
Circulation
Lesson Outcomes
• What are the four parts of the heart called?
• Why does the heart need valves in it?
• Where does each side of the heart pump
blood?
• Why is the left side of the heart thicker
than the right side?
• Why does the heart need it’s own blood
supply if it is full of blood all day?
• What would happen if that blood supply was
blocked by fat and blood clots?
You are a red blood cell.
Your job is to carry oxygen and
carbon dioxide around the body. It’s
like being a taxi driver.
Tell your story:
When do you pick up
oxygen?
When does the blood
pick up carbon dioxide?
What can you see on
your journey?
Lungs: pick up oxygen
Heart pumps
deoxygenated
blood to lungs
Blood takes
carbon
dioxide to
heart
Blood picks up
carbon dioxide
from body
cells
Oxygenated
blood taken
to heart
Oxygenated
blood
pumped
around body
Blood cells
give oxygen
to body cell