Human Body Systems Review
A Grade 9 science worksheet reviewing the major organ systems of the human body, including their functions and key components.
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Human Body Systems Review
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Read each question carefully and answer to the best of your ability. This worksheet covers the major organ systems of the human body and their functions.
1. Which organ system is responsible for breaking down food into nutrients the body can use?
Circulatory system
Digestive system
Respiratory system
Nervous system
2. The primary function of the circulatory system is to:
Produce hormones
Transport oxygen and nutrients
Fight off infections
Regulate body temperature
3. The system is responsible for gas exchange, taking in oxygen and expelling carbon dioxide.
4. The brain and spinal cord are key components of the system.
5. The skeletal system provides support and protection for the body's organs.
True
False
6. The integumentary system consists mainly of muscles and bones.
True
False
Match each organ system with its primary function.
7. Endocrine System
a. Movement
8. Muscular System
b. Regulates body functions through hormones
9. Urinary System
c. Filters waste from blood
10. Briefly explain the relationship between the respiratory and circulatory systems in maintaining homeostasis.
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