How does your brain control your body?

Why does it look like you have a hole in your hand when looking through a tube?

• your eyes get confused at what they are seeing.

• the brain can only focus on one thing at a time.

• the brain combines the two different images that your eyes see.

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The cords that connect your sense of touch to your brain are called

• movement nerves.

• sensory nerves.

• ligaments.

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Why is it important that your brain take in information from all of your senses?

• The brain has to combine your senses to make decisions.

• The sense of touch is more important than the other senses.

• Your eyes sometimes get confused.

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Saying the colors that words are written in instead of reading the word was tricky because

• you had to stop your brain from doing what it is used to doing (reading words)

• the experiment makes you forget the colors for a couple minutes.

• identifying colors is harder than reading words.

Your brain is always getting information from

• your senses that give information to the brain through nerves.

• your nerves which travel up the senses to the brain.

• your sense of touch, which then communicates with your senses.

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Nerves

• always travel to the brain.

• always travel away from the brain.

• travel to and from the brain.

The movement of your body is controlled by your brain sending information to muscles through

• movement nerves

• movement senses

• movement tendons

Why are you not able to grab a dropped ruler as soon as you see that it’s falling?

• It takes time for your movement nerves to feel it falling and then tell your brain to close your hand.

• It takes time for your sensory nerves to communicate with your brain and then for your brain to communicate to the movement nerves.

• It takes time for your sense of touch to tell your brain to close your hand.

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Imagine that the fox sees the squirrel and chases after it. Which of the following models best describes how the fox’s body parts do that?

• eyes see squirrel → legs run after squirrel

• nose sees squirrel → nose sends a message along the nerves to the brain → brain sends messages down the nerves to make the legs run

• brain sees squirrel → brain sends a message along the nerves to the eyes → eyes send a message along the nerves to make the legs run

• eyes see squirrel → eyes send a message along nerves to the brain → the brain decides to chase → brain sends a message along the nerves to make the legs run

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Imagine that the squirrel smells the fox behind it and decides to run away. Which must happen first?

• brain decides to run away

• nose smells fox

• legs run away

• nothing

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