Brain
What is the main function of the brain?
the brain’s role is receiving information from the senses, processing that information, and controlling the muscles to enable movement
the clear layer in front of the eye
cornea
Would you be able to move if you didn’t have bones?
No, you would not be able to move without your bones, because your muscles would have nothing to pull on. Your bones are the structure of your body.
the brain and all the nerves in the body
Nervous System
something that tricks or confuses your brain
illusion
something that tricks or confuses your brain
illusion
the colored part of the eye that is shaped like a donut
iris
a part of the body that attaches to bones and allows the body to move
muscles
What are the parts of the body that carry signals from one part of the body to another part?
Nerves
To take something apart to study it
dissect
Why does it look like you have a hole in your hand when you try the hole-in-hand illusion?
It looks like that because one eye sees a hole and the other eye sees your hand. Your brain combines the two
the dark opening in the center of the eye
pupil
a part of the body that attaches muscle to bone
tendon
the parts of the body that carry signals from the senses (eyes, ears, mouth) to the brain
Sensory Nerves
active mostly at night
nocturnal
the back of the eye that senses light and sends messages to the brain
retina
the parts of the body that carry signals from the brain to muscles
motor nerves
How does light enter the eye?
Through the cornea
Why do some people have blurry vision?
Some people have blurry vision because the back of their eye is just a little bit too far or a little bit too close to the front of the eye. When this happens the image is blurry, not focused.
What is the difference between your movement nerves and your sensory nerves?
Your movement nerves are how your brain controls your muscles. They go from your brain out to your muscles. Your sensory nerves are how your brain gets messages from your senses. They go from your senses to your brain.
Why does the pupil get larger when it is dark?
Your pupil gets larger so that more light comes into your eye. This helps you see better in the dark