Educational worksheet for students to match human body systems with their functions and names.

Let's solve this step by step. The task is to match each description in Column A with the correct human body system in Column B.

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Column A (Descriptions):

1. This provides structure to the human body and protects vital organs.
2. It is also known as the cardiovascular system and carries nutrients and oxygen throughout the body.
3. Cleans your blood & makes pee.
4. This system includes the body’s largest organ, the skin.
5. It is the system that supports the body's movement.
6. This system helps the body turn food into energy and removes excess water, toxins, and waste.
7. It is the system that sends neural signals.
8. It is the system that makes hormones and humans.
9. It is the system that fights off disease.
10. It is the system of organs and glands that controls the body's chemical messages through hormones.
11. It is the body's protective system by draining and killing toxins to protect from disease.
12. This system takes in oxygen for the body and expels carbon dioxide.

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Column B (Systems):

A. Respiratory system
B. Endocrine system
C. Reproductive system
D. Digestive & Excretory system
E. Integumentary system
F. Circulatory system
G. Muscular System
H. Lymphatic system
I. Renal (or Urinary) System
J. Nervous system
K. Skeletal system
L. Immune system

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Now, let's match each one:

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1. Provides structure and protects vital organs → Skeletal system
→ K. Skeletal system

2. Also known as cardiovascular system, carries nutrients and oxygen → Circulatory system
→ F. Circulatory system

3. Cleans your blood & makes pee → Renal (Urinary) System
→ I. Renal (or Urinary) System

4. Includes the body’s largest organ, the skin → Integumentary system
→ E. Integumentary system

5. Supports the body's movement → Muscular system
→ G. Muscular System

6. Turns food into energy, removes excess water, toxins, and waste → Digestive & Excretory system
→ D. Digestive & Excretory system

7. Sends neural signals → Nervous system
→ J. Nervous system

8. Makes hormones and humans → This refers to Reproductive system (makes humans), and Endocrine system (makes hormones). But since it says "hormones and humans", it likely means Reproductive system, which is responsible for reproduction and some hormones. However, the endocrine system produces hormones. But “makes humans” is key — so Reproductive system.
→ C. Reproductive system

9. Fights off disease → Immune system
→ L. Immune system

10. Controls body’s chemical messages through hormones → Endocrine system
→ B. Endocrine system

11. Protective system by draining and killing toxins → Lymphatic system
→ H. Lymphatic system

12. Takes in oxygen and expels carbon dioxide → Respiratory system
→ A. Respiratory system

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✔ Final Matching:

| Column A | Answer |
|--------|--------|
| 1 | K. Skeletal system |
| 2 | F. Circulatory system |
| 3 | I. Renal (or Urinary) System |
| 4 | E. Integumentary system |
| 5 | G. Muscular System |
| 6 | D. Digestive & Excretory system |
| 7 | J. Nervous system |
| 8 | C. Reproductive system |
| 9 | L. Immune system |
| 10 | B. Endocrine system |
| 11 | H. Lymphatic system |
| 12 | A. Respiratory system |

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📝 Explanation Summary:

- Skeletal system gives shape and protection.
- Circulatory system transports blood, nutrients, and oxygen.
- Renal (Urinary) system filters blood and produces urine.
- Integumentary system includes skin — largest organ.
- Muscular system enables movement.
- Digestive & Excretory system processes food and removes waste.
- Nervous system handles communication via nerves.
- Reproductive system produces offspring.
- Immune system defends against pathogens.
- Endocrine system regulates body functions via hormones.
- Lymphatic system helps immunity and fluid balance.
- Respiratory system manages gas exchange (O₂ in, CO₂ out).

✔ All matched correctly!

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