Download How does the heart work

5.2
Homework sheet
Name:
Class:
How does your heart work?
Aim
To annotate a diagram of the heart and explain how it works.
The heart is part of the circulatory system and contains a volume of about 0.5 litres. This organ is
vital, as it pumps the blood around your body. Without it, all the cells would die as they would not
have the chemicals they need to live.
On the diagram below:
1
Colour in blue the areas where deoxygenated blood would be found.
2
Colour in red the areas where oxygenated blood would be found.
3
Add black arrows onto the diagram to show the direction of the blood flow in the organ.
4
Label the four chambers of the heart (right atrium, left atrium, right ventricle, left ventricle).
5
Label the three valves of the heart.
AQA Additional Applied Science © Nelson Thornes Ltd 2007
5.2
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5.2
Homework sheet
Continued …
Questions
1
Why is the left side of the heart larger than the right side?
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2
What is the name of the only vein in the body that contains oxygenated blood?
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3
Why is the heart often called a double pump?
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4
What is the purpose of the heart valves?
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5
What is the name of the blood vessels that carry blood away from the heart?
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AQA Additional Applied Science © Nelson Thornes Ltd 2007
5.2
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