Grade 8 Science: Heart Structure
This worksheet covers the basic structure and function of the human heart, including its chambers, valves, and major blood vessels.
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Heart Structure Worksheet
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Read each question carefully and answer to the best of your ability. Refer to the diagram of the human heart provided.
1. Which chamber of the heart receives oxygen-rich blood from the lungs?
Right Atrium
Left Atrium
Right Ventricle
Left Ventricle
2. What is the main function of the valves in the heart?
To pump blood out of the heart
To prevent the backflow of blood
To carry oxygen to the heart muscle
To filter waste products from the blood
3. The human heart has chambers: two atria and two ventricles.
4. The largest artery in the body, carrying oxygenated blood from the left ventricle to the rest of the body, is the .
5. The right side of the heart pumps oxygenated blood to the body.
True
False
6. The pulmonary artery carries deoxygenated blood from the heart to the lungs.
True
False
7. Briefly explain the difference between an atrium and a ventricle.
8. Describe the path of blood circulation through the heart, starting from when deoxygenated blood enters the heart.
Use the words below to complete the sentences.
9. Deoxygenated blood enters the right atrium through the .
10. Oxygenated blood leaves the left ventricle and goes to the body via the .
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