Date post: | 18-Jan-2018 |
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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
Oxygenated blood taken to heartOxygenated blood pumped around body
Blood cells give oxygen to body cell
Blood picks up carbon dioxide from body cells
Blood takes carbon dioxide to heart
Heart pumps deoxygenated blood to lungs