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Across
3.carry nerve impulses away from the central nervous system to effectors
6.A type of neuroligial cell that surrounds an axon ofa peripheral neuron, forming the neruilemmal sheath and myelin
7.the basic building blocks of the nervous system
11.Acts as a control system functioning largely below the level of consciousness, and controls visceral functions
15.ct as the first and main form of active immune defense in the central nervous system
20.The part of the nervous system that integrates the information that it receives
23.A bundle of axons in the peripheral nervous system
25.Masses of neuron cell bodies, usually outside the central nervous system
26.Fatty layers formed from certain neruoglia that surrounds axons, providing insulation
Down
1.Consists of the nerves and ganglia outside of the brain and spinal cord
2.A long, slender projection of a nerve cell, or neuron, that conducts electrical impulses away from the neuron's cell body
4.Chemicals that axons secrete on effectors or other neurons
5.carry nerve impulses from receptors or sense organs towards the central nervous system
8.A type of neuroglial cell that forms myelin
9.The voluntary control of body movements
10.Portion of nerve cell that includes cytoplasmic mass and a nucleus and form which nerve fibers extend
12.Specialized structures associated with the peripheral end of sensory neurons specific to detecting a particular sensation and triggering nerve impulses in response, which transmitted to the central nervous system.
13.Branched projections of a neuron that act to conduct the electrochemical stimulation received from other neural cells to the cell body
14.Muscles or glands that effect changes in the body
16.the sequence of electrical changes that occurs in a portion of a nerve cell membrane that is exposed to a stimulus that exceeds the membranes threshold
17.The gaps formed between the myelin sheaths generated by different cells
18.The difference in electrical charge between the inside and the outside of an undisturbed nerve cell membrane
19.Neuroligal cells tat line the ventricles of the brain
21.A type of neuroglial cell that connects neurons to blood vessels
22.specialized cells of the nervous system that produce myelin, communicate between cells, maintain the ionic environment, and nurture the differentiation of neruons
24.The functional connection between the axon of a neuron and the dendrite or cell body of another neuron or the membrane of another cell type

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