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Chapter 9 vocabulary

Vicki Ola

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Across
1.wind tightly around axons (2 Words)
4.carry impulses from the central nervous system to the responsicve structures
6.aligns along nerve fibers
7.the neurons rounded area (2 Words)
8.located outside the brain and spinal cord
11.masses of nerve cells
13.the potential difference btween the region inside the membrane and the region outside the membrane (2 Words)
14.also known as efferent fibers (2 Words)
15.the junction between any two communicating neurons
18.synaptic transmission in a one-way process carried out by biochemicals
19.controls effectors that are involuntary (3 Words)
21.controls skeletal muscle (3 Words)
22.keeps larger axons of peripheral neurons (2 Words)
24.scattered throughout the central nervous system
25.neurons are depolarized sufficiently (2 Words)
26.found between neurons and blood vessels
27.also known as afferent fibers (2 Words)
Down
2.narrow gaps between Schwann cells (3 Words)
3.connects the central nervous system to other body parts (3 Words)
5.form an epithelia-like membrane that covers specialized parts of the brain (2 Words)
9.bundles of axons
10.the basis for the nerve impulses (2 Words)
12.consists of the brain and spinal cord (3 Words)
16.gather info by detecting changes inside and outside the body (2 Words)
17.fills spaces, produce myelin, and provides structural frameworks
20.receive electrochemical messages
23.extensions that send info in the form of nerve impulses

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