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Nervous System

Sarai Gutierrez

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1.masses of neuron cell bodies, usually outside the central nervous system
4.the brain and spinal cord
7.motor pathways of the peripheral nervous system that lead to the skin and skeletal muscles
11.narrow gaps between Schwann cells
14.nerve cells
17.a nerve fiber that conducts a nerve impulse away from the neuron body cell
18.chemicals that axons secrete on effectors or other neurons
23.part of the nervous system outside of the central nervous system
24.a type of neuroglia cell that connects neurons to blood vessels
25.process of a neuron that recieves input from other neurons
26.muscles or glands that effect changes in the body
27.portion of nerve cell that includes a cytoplasmic mass and a nucleus, and from which nerve fibers extend
2.part of the nervous system that controls the viscera
3.carry nerve impulses away from the central nervous system to effectors
5.carry nerve impulses from receptors or sense organs towards the central nervous system.
6.a neurological cell that supports neurons and phagocytizes
8.the sequence of electrical changes that occurs in a portion of nerve cell membrane that is exposeed to a stimulus that exceeds the membrane's threshold
9.neurological cells that line with ventricles of the brain
10.a type of neuroglial cell that forms myelin
12.the difference in electrical charge between the inside and the outside of an undisturbed cell membrane
13.the functional connection between the axon of a neuron and the dendrite or cell ody of another neuron or the membrane of another cell type
15.stimulation level that must be exceeded to elicit a nerve impulse or muscle contraction
16.specialized structures associated with peripheral ends of sensory neurons specific to detecting a particular sensation and triggering nerve impulses in response, which are transmitted to the central nervous system
19.a type of neuroglia cell that surrounds an axon of a peripheral neuron, forming the neurilemmal sheath and myelin
20.fatty material that forms a sheathlike covering around some axons
21.a bundle of axons in the peripheral nervous system
22.specialized cells of the nervous system that produce myelin, communicate between cells, maintain the ionic environment, and nurtur the differentiation of neurons

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