Questions: Brain and Nerves

Question 1

You touch a hot stove and pull your hand away quickly. What sent the message from your hand to your brain?

• A. Your blood
• B. Your bones
• C. Your nerves
• D. Your muscles

Answer: (C)

Nerves in your hand felt the heat and sent a fast message to your brain saying 'this is hot!' Your brain then sent a message back through nerves to your arm muscles saying 'pull away!' This all happens in a split second.

Question 2

Your brain stops working when you fall asleep.

• T. True
• F. False

Answer: False

Your brain keeps working while you sleep. It keeps your heart beating, your lungs breathing, and your body temperature steady. It also processes memories and creates dreams. Your brain never fully stops — it is always on duty.

Question 3

What do nerves do in your body?

Model answer: Nerves carry messages between your brain and the rest of your body, like wires carrying signals. They tell your brain what you are sensing and carry your brain's instructions to your muscles.

Nerves are like a communication network. Sensory nerves carry information from your eyes, ears, skin, and other sense organs to your brain. Motor nerves carry instructions from your brain to your muscles, telling them when and how to move. Without nerves, your brain would be disconnected from your body.