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10 Cards in this Set
- Front
- Back
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Central nervous system |
network of nerves that includes the briana dn spinak cord; integrates and processses information sen tby nerves |
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peripheral nervous system |
network of nerves that carry sensory messages to the central nercous system and sen information from the CNS to the muscles and glands autonomic and somatic system |
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neuron |
nerve cell; the structual and functional unit of the enrcous system, consisting of the nucleus, cell body, dendrites and acons responds to physical and chemical stimuli, conduct electrochemical singla,s and to release chemcials that requlate cariosu body processes |
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nerve |
message pathway of the nervous system; made up of many neyrons groups into bundels ands urrounded by protective connective tissue |
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glial cell |
support cell of the nervous system that nourishes neurons (nerve-impulse conducting cells_ removes their wastes, defends against infection, and provides a supporting framework for all the nervous system tissue |
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myelin sheath |
the fatty, insulting layer around the axon of nerve cells composed of Schwann cells which protects myelinated axons and speeds the rate of nerve impulse transmission |
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multiplolar neuron |
has deveral dendrites has a single axon found int he brain and spinal cord |
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bipolar neuron |
has a single main dendrie has a single acon found int he inner ear, the retina of the ye ad the olfactory area of the brain |
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unipolar neuron |
has a single process that extends form the cell body dendrite and axon are fused found in the peripheral nervous system |
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sensory input |
sensory receptors, such as those in the skin, receive stimuli and form a nerve impulse sensory neurons trasmit impulsed form the sensory receptors to the central nervous system (brain and spinal cord) |
