Circulatory and Respiratory Systems Review
A Grade 7 science worksheet covering the functions, components, and interactions of the human circulatory and respiratory systems.
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Circulatory and Respiratory Systems Review
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Read each question carefully and answer to the best of your ability. Use complete sentences for short answer questions.
1. Which component of blood is responsible for carrying oxygen?
White blood cells
Platelets
Red blood cells
Plasma
2. What is the primary function of the diaphragm in the respiratory system?
To filter air
To produce sound
To aid in breathing
To exchange gases
3. The human heart has chambers.
4. Oxygen from the inhaled air diffuses into the blood in tiny air sacs called .
Match the organ with its primary function.
5. Heart
a. Gas exchange
6. Lungs
b. Pump blood
7. Arteries
c. Carry blood away from the heart
8. Briefly explain how the circulatory and respiratory systems work together to deliver oxygen to the body's cells.
9. Label the main organs of the circulatory system in the diagram below.
10. The trachea is also known as the windpipe.
True
False
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