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Nervous System ANAT
Question | Answer |
---|---|
2 divisions of the nervous system | Central and Periphereal Nervous System |
2 divisions of the nervous system | Central and Periphereal Nervous System |
2 divisions of the nervous system | Central and Periphereal Nervous System |
2 divisions of the nervous system | Central and Periphereal Nervous System |
what does the CNS (central nervous system) consist of | brain and spinal cord |
what does the CNS (central nervous system) consist of | brain and spinal cord |
what does the CNS (central nervous system) consist of | brain and spinal cord |
parts of a neuron (6) | dendrites - axon - cell body - myelin - nodes of ranvier - neurilemma |
what does the PNS consist of | somatic and autonomic |
conducts nerve pulses for a neuron | dendrite |
what does the PNS consist of | somatic and autonomic |
conducts nerve pulses for a neuron | dendrite |
parts of a neuron (6) | dendrites - axon - cell body - myelin - nodes of ranvier - neurilemma |
transmits impulses away from cell body | axon |
conducts nerve pulses for a neuron | dendrite |
conducts nerve pulses for a neuron | dendrite |
transmits impulses away from cell body | axon |
conducts a nerve impulse from nucleus to axon | cell body |
condition where the myelin sheaths of a myelinated axon degenerate | multiple sclerosis |
white fatty substance that surrounds axon to provide insulation and nutrients - allows nerve impulses to skip down the axon for much quicker travel | myelin |
conducts a nerve impulse from nucleus to axon | cell body |
condition where the myelin sheaths of a myelinated axon degenerate | multiple sclerosis |
white fatty substance that surrounds axon to provide insulation and nutrients - allows nerve impulses to skip down the axon for much quicker travel | myelin |
the sections between the myelinated sheaths on an axon | nodes of Ranvier |
white fatty substance that surrounds axon to provide insulation and nutrients - allows nerve impulses to skip down the axon for much quicker travel | myelin |
condition where the myelin sheaths of a myelinated axon degenerate | multiple sclerosis |
the sections between the myelinated sheaths on an axon | nodes of Ranvier |
the sections between the myelinated sheaths on an axon | multiple sclerosis |
found strictly in PNS - the outer membrane of a Schwann cell - purpose is to regenerate damaged neuron | neurilemma |
speeds up nerve conduction bc the impulse skips down the axon via the myelin sheaths | saltatory conduction |