Lesson 73 of 84 · The Human Body
Experiment⭐ 30 XP🌿 Wild JungleNeurons and Nerve Signals (Part 4)
The Human Body.
🎯 Your mission
Predict it first. Then prove yourself right (or wrong).
⚡ The twist
What the body does in one minute is wilder than any cartoon.
Mind = Blown
🐙 An octopus has 9 brains and 3 hearts.
Make a hypothesis first
Guess: how does the body solve this problem?
What You'll Learn
Neurons are specialized cells that transmit electrical and chemical signals throughout the nervous system. Sensory neurons carry signals from receptors to the brain.
Key Words
- hormone
- skeletal system
- muscular system
Materials Needed
- cups
- different scented items
- textured objects
Safety First
- Tie back long hair before starting the experiment.
- Protect your work surface with newspaper or plastic.
Steps
Read the introduction and identify the main idea of this lesson.
Build a model arm using cardboard tubes, string (tendons), and rubber bands (muscles). Show how muscles work in pairs to bend and straighten the elbow.
Compare the before and after states.
Write your conclusion: did the results match your hypothesis? What would you change next time?
Check Your Understanding
Question 1
1 of 3What converts sound waves into nerve signals?
Where you see this in real life
Your own body is doing this thousands of times every second.
Stretch Challenge
Try this in real life this week.
Find one thing about your body that's different from a friend's. Wonder why.
For the dinner table
“Tell me something you noticed about your own body today.”
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