Nervous System

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Down 1. substance that transmits nerve impulses across a synapse 2. the sensors that sense changes in the internal and external enviroment 3. the region where neurons communicate with each other 4. connect the sensors to the brain and spinal cord and take commands to tissue from spinal cord to produce a responce 6. nerves that carry impulses to and from the brain 7. the organs that respond to impulses from the CNS 9. a collection of cell bodies of neurons 11. bundles of axons of neurons haveing the some function and destination 12. located in the CNS are collections of cell bodies of neurons haveing the same function 14. clusters of cell bodies of neurons in the CNS

Across 1. neurons are supported and protected by specliazed tissue known as 5. functional unit of the neverous system 8. a collection of axons of motor neurons , dentriets of sensory neurons 10. neverous system consists of 13. nerves that carry impulses to and from the spinal cord 15. particular form of energy to which the receptor responds is its 16. sense changes in the internal & external enviroment

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