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Chapter 9 Vocabulary (Part 1)

Morgan Nichols

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Across
5.The vessel that conducts blood away from the glomerulus of each kidney nephron.
6.A type of neuroglial cell that forms myelin.
8.A nerve fiber. It conducts a nerve impluse away from the neuron cell body.
9.A constriction in the myelin sheath, occurring at varying intervals along the length of a nerve fiber.
10.Motor pathways of the peripheral nervous system that lead to the skin and teh skeletal muscles.
14.Masses of neuron cell bodies, usually outside of the central nervous system.
18.A type of neuroglial cell that surrounds an axon of a peripheral neuron, forming the neurilemmal sheath and myelin.
20.Specialized structures associated wit the peripheral ends of sensory neurons specific to detecting a particular sensation and triggering nerve impluses in response, which are transmitted to the central nervous system.
22.A type of neuroglial cells that connects neurons to blood vessels.
23.The brain and the spinal cord.
25.Portion of nerve cell that includes a cytoplasmic mass and a nucelus, and form wich nerve fibers extend.
26.Part of the nervous system that controls the viscera.
27.The diffeernece in electrical charge between the inside and the outside of an undisturbed nerve cell membrane.
Down
1.The functional connection between the axone of a neuron and the dendrite or cell body of another neuron or the membrane of another cell type.
2.Part of the nervous system outside the central nervous system.
3.Vessel that conveys blood to the glomerulus of each kidney nephron in a kidney.
4.A neuroglial cell that supports neurons and phagoytizes.
7.Muscles or glands that effect changes in the body.
11.Fatty layers formed from certain neuroglia that suuround axons, providing insulation.
12.The sequence of electrical changes that occur in a portion of a nerve cell membrane that is exposed to a stimulus that exceeds the membrane's threshold.
13.Stimulation level that must be exceeded to elicit a nerve impluse or a muscle contraction.
15.Nerve cells.
16.Chemicals that axons secrete on effectors (muscle or glands) or other neurons.
17.Process of as neuron that recieves input from other neurons.
19.A bundle of axons in the peripheral nervous system.
21.Neuroglial cells that line the ventricles of the brain.
24.Specialized cells ofthe nervous system that produce myelin, communicate between cells, maintain the ionic environment, and nurture the differentitation of neurons.

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