Here's the completed worksheet with explanations for each answer:
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The Nervous System
*(Word Bank: Brain, Spinal cord, skull, Signals, nerves, Nervous system)*
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1. The _Nervous system_ is responsible for all the activities of your body.
✔ Explanation: The nervous system is the entire control system of the body — it coordinates everything from movement and thought to heartbeat and digestion. It includes the brain, spinal cord, and all the nerves.
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2. The _nerves_ form a network throughout the body.
✔ Explanation: Nerves are like wires that carry messages between the brain/spinal cord and the rest of the body. They branch out everywhere, creating a communication network.
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3. The _Brain_ acts like a computer that controls the body’s functions.
✔ Explanation: The brain processes information, makes decisions, and sends instructions — just like a computer’s central processing unit (CPU). It’s the command center.
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4. The _Spinal cord_ runs down the middle of the body and connects the brain and nerves.
✔ Explanation: The spinal cord is a thick bundle of nerves running from the brain down the back. It’s the main pathway for signals traveling between the brain and the rest of the body.
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5. The _skull_ protects the brain.
✔ Explanation: The skull is the bony structure surrounding the brain. Its hard, rigid shape shields the delicate brain tissue from injury.
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6. The brain sends _signals_ throughout the body, telling the body how to react and respond.
✔ Explanation: Signals (or nerve impulses) are electrical and chemical messages sent by the brain via nerves to muscles and organs, instructing them on what to do — like moving your hand or breathing.
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✔ Final Answer Key:
1. Nervous system
2. nerves
3. Brain
4. Spinal cord
5. skull
6. signals
This worksheet helps students understand the key components and roles of the human nervous system using simple analogies and vocabulary.
Parent Tip: Review the logic above to help your child master the concept of nervous system worksheet middle school.
