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15 Cards in this Set
- Front
- Back
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what is the nervous system?
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the system of nerves which includes the brain, the nerves, and the spinal cord
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what are nerves?
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the fibers that carry messages to and from the brain
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what is the spinal cord?
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a bundle of nerves found in the back bone
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what are sense organs?
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the parts of the body that are designed to help you react to things around you
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what is the iris?
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The colored part of the eye that controls the size of the pupil.
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What is the optic nerve?
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The nerve which carries the message of sight to the brain.
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What is the definition of "vibarate"?
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to move rapidly back and forth
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What are sound waves?
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sound vibrations traveling through the air
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What is the cochlea?
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the part in the inner ear which is filled with liquid that stimulates the auditory nerve
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What is the auditory nerve?
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the nerve which carries the message of hearing to the brain
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What are molecules?
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tiny particles of a substance
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What are taste buds?
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the little bumps on the tongue which contain nerves for the sense of taste
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What are pores?
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the tiny holes in the skin
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What is perspiration?
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the liquid waste that is given off through the pores of the skin
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What is a scab?
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the protective crust that forms over a wound when your skin has been cut
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