Nervous System ANAT
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| 2 divisions of the nervous system | Central and Periphereal Nervous System
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| what does the CNS (central nervous system) consist of | brain and spinal cord
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| 3 parts of a neuron | dendrites - axon - cell body
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| 2 branches of the peripheral nervous system (PNS) | somatic and autonomic
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| arm-like extensions of the neuron which receive the initial nerve impulse and conducts the impulse into the cell body of the neuron. | dendrite
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| part of the neuron which transmits impulses away from the cell body | axon
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| part of the neuron which contains the nucleus and conducts the nerve impulse toward the axon | cell body
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| autoimmune condition where the myelin sheaths of a myelinated axon degenerate resulting in the gradual loss of motor function | multiple sclerosis
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| white fatty substance that surrounds axon to provide insulation and nutrients - allows nerve impulses to skip down the axon for much faster transmission | myelin
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| the spaces or nodes between the myelinated sheaths on an axon which allow for saltatory conduction | nodes of Ranvier
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| found strictly in PNS - the outer membrane of a Schwann cell - purpose is to regenerate damaged neuron | neurilemma
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| type of nerve conduction that skips down the axon of a neuron via the Nodes of Ranvier in between patches of myelin, thereby speeding up nerve conduction | saltatory conduction
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| nerve tissue consisting of myelinated axons and therefore designed for speed. Controls automatic functions such as breathing, heart rate, and blood pressure. | white matter
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| nerve tissue consisting of unmyelinated axons and designed for processing information. Controls the senses such as hearing, vision, smell, touch, as well as memory and speech. | gray matter
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Created by:
boakes
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