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The Nervous System

Name____________________________________
Date____________Per.__________Row________
Life Science Textbook   Chapter 6 pages 172-197
Across
The message carried by a neuron.
The condition in which a person can see distant objects clearly.
A bundle of nerve fibers.
A neuron that carries nerve impulses from one neuron to another.
The part of the brain that interprets input from the senses, controls movement, and carries out complex mental processes.
The division of the nervous system consisting of the brain and spinal cord.
The opening through which light enters the eye.
The part of the central nervous system that is located in the skull and controls most functions in the body.
A small-shaped tube in the inner ear that is lined with receptor cells that respond to sound.
A cell that carries information through the nervous system.
The division of the nervous system consisting of all the nerves located outside the central nervous system.
Structures in the inner ear that are responsible for the sense of balance.
A bruiselike injury of the brain that occurs when the soft tissue of the brain collides against the skull.
The circular structure that surrounds the pupil and regulates the amount of light entering the eye.
The junction where one neuron can transfer an impulse to the next structure.
A threadlike extension of a neuron that carries nerve impulses toward the cell body.
A change in an organism's surroundings that causes the organism to react
An automatic response that occurs rapidly and without conscious control.
Down
An action or change in behavior that occurs in reaction to a stimulus.
A neuron that sends an impulse to a muscle or gland , causing the muscle or gland to react.
The group of nerves in the peripheral nervous system that controls involuntary actions.
The membrane that separates the outer ear from the middle ear, and that vibrates when sound waves strike it.
The group of nerves in the peripheral nervous system that controls voluntary actions.
The condition in which a person can see nearby objects clearly.
The flexible structure that focuses light that has entered the eye.
neuron that picks up stimuli from the internal or external environment and converts each stimulus into a nerve impulse.
The thick column of nerve tissue that links the brain to most of the nerves in the peripheral nervous system.
A threadlike extension of a neuron that carries nerve impulses away from the cell body.