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Chapter 35 - Nervous System
Across
1. process by which organisms maintain a relatively stable internal environment
9. neuron that reacts to a specific stimulus, such as light or sound, by sending impulses to other neurons and eventually to the central nervous system
12. in the retina of the eye, a photoreceptor that responds to light of different colors, producing color vision
13. process in which the product or result stops or limits the process
14. brain structure that receives messages from the sense organs and relays the information to the proper region of the cerebrum for further processing
15. area of the brain responsible for all voluntary activities of the body
16. electrical charge across the cell membrane of a resting neuron
17. structure that connects the brain and spinal cord; includes the medulla oblongata and the pons
Down
2. location at which a neuron can transfer an impulse to another cell
3. chemical used by a neuron to transmit an impulse across a synapse to another cell
4. reversal of charges across the cell membrane of a neuron; also called a nerve impulse
5. long fiber that carries impulses away from the cell body of a neuron
6. region of the brain that coordinates body movements
7. extension of the cell body of a neuron that carries impulses from the environment or from other neurons toward the cell body
8. cell that carries messages throughout the nervous system
10. insulating membrane surrounding the axon in some neurons
11. minimum level of a stimulus required to activate a neuron
12. fluid-filled part of the inner ear; sends nerve impulses to the brain through the cochlear nerve