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15 Cards in this Set

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