1. How Parts of the Nervous System Work
SCIENCE 6
How Parts of the Nervous System Work

2. If you are suddenly hurt with this sharp object, what is your reaction?

4. Did you see how he/she reacted after I call her/him?

5. Can you recall what you have done yesterday?
How about your activities the other day or a month ago? Name some of these activities.
Write them and brainstorm.

6. https://www.youtube.com/watch?v=44B0ms3XPKU or

7. The central nervous system receives information from the sensory nerves and responds to the information by sending messages through the motor nerves to various parts of the body.

8. The central nervous system receives and interprets information and directs the body what to do.
-The central nervous system consists of the brain and the spinal cord. The brain controls everything you do.

9. It enables you to speak, to remember, to memorize and to move your bones and muscles in coordinated ways. It controls the beating and the emotions of your heart and allows you to perform so many things even while you are asleep.

10. Activity: Measuring Your Reaction Time
Let’s find out: How long does it take the brain to send message to your arm muscles?

11. Let’s use this materials:
Chair, meterstick
Let’s do it this way:
1 Get a partner to work with you.
2 Sit on chair with one arm in a “handshake” position.
3 Let your partner stand facing you holding the meter stick vertically, with 0 at the bottom.
4 Your partner will drop the meterstick. You have to catch the meter stick between your thumb and fingers.
5 Look at the centimeter on the meter stick where you have grasped or held it. This is the distance representing your reaction time. Record it.
6 Repeat steps 1-5 three times. Record your data. Calculate the average distance.
7 Repeat steps 1-6 using your other hand.
8 Exchange places with your partner and do the same procedure.

12. meterstick

13. Answer the questions:
1 .Compare the result of your reaction time with your partner.
2. What does your reaction time indicate?

14. What happens when the central nervous system does not function well?

15. The central nervous system receives information from the sensory nerves and responds to the information by sending messages through the motor nerves to various parts of the body
- The central nervous system receives and interprets information and directs the body what to do.
-The central nervous system consists of the brain and the spinal cord. The brain controls everything you do. It enables you to speak, to remember, to memorize and to move your bones and muscles in coordinated ways. It controls the beating and the emotions of your heart and allows you to perform so many things even while you are asleep.

16. How does a message reach the brain and how does the brain react to it?