January 27th, 2017 Night by: Elie Wiesel

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Directions: ANSWER USING COMPLETE SENTENCES! Use the information you have been given to answer questions about: The Nervous System and Your Actions

*To improve your MATH SKILLS spend at least 20 minutes practicing them using IXL.COM. (REMEMBER TO ENTER YOUR USER NAME AND PASSWORD WHEN LOGGING ON! THAT WILL BE PROOF THAT YOU DID IT!

Level#1

The nervous system sends messages among the different organs of the body. These messages are signals called impulses. There are three ways the nervous system processes impulses. Reflexes are involuntary responses to outside stimuli. They happen without your brain "thinking" about them. These impulses are processed in your spinal cord rather than in your brain. Suppose you touch a very hot pan. Your arm muscles lift your hand away from the pan. This movement occurs before the pain message reaches your brain.

1. How do reflexes happen?





2. Where are reflex impulses processed?





3. How do reflexes help you if you touch a very hot pan?








Level#2

The nervous system sends messages among the different organs of the body. These messages are signals called impulses. There are three ways the nervous system processes impulses. Reflexes are involuntary responses to outside stimuli. They happen without your brain "thinking" about them. These impulses are processed in your spinal cord rather than in your brain. Suppose you touch a very hot pan. Your arm muscles lift your hand away from the pan. This movement occurs before the pain message reaches your brain. Automatic impulses are those that control how your body's organs function. They cause your stomach muscles to squeeze together. They help you breathe. They also keep your heart beating.

1. How does your nervous system help you if you touch a very hot pan, and when does this movement occur?





2. What are automatic  impulses?





3. Describe the three different automatic impulses.











Level#3

The nervous system sends messages among the different organs of the body. These messages are signals called impulses. There are three ways the nervous system processes impulses. Reflexes are involuntary responses to outside stimuli. They happen without your brain "thinking" about them. These impulses are processed in your spinal cord rather than in your brain. Suppose you touch a very hot pan. Your arm muscles lift your hand away from the pan. This movement occurs before the pain message reaches your brain. Automatic impulses are those that control how your body's organs function. They cause your stomach muscles to squeeze together. They help you breathe. They also keep your heart beating. Voluntary nerve action means that you think about doing something first. Then, you do it. Voluntary nerve impulses usually control muscles.

1. Explain what automatic impulses are and give three example of these impulses.









2. Explain what voluntary nerve action means, what happens as a result of it, and what voluntary nerve impulses control.











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