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19 Cards in this Set
- Front
- Back
Autonomic Nervous System
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Portion of the nervous system that controls the actions of the Viscera and the Skin
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Axon
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Nerve fiber that conducts impulses away from the neuron cell body
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Action Potential
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Sequence of electrical changes in a nerve cell membrane exposed to a stimulus that exceeds it's threshold
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Dendrite
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Nerve fiber that transmits impulses toward the nerve cell body
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Central Nervous Sustem
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Portion of the nervous system that consists of the brain and spinal cord.
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Covergnece
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Nerve impulses arriving at the same neuron
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Divergence
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A neuron sending impulses to multiple other neurons
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Effector
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muscle or gland that responds to stimulation
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Facilitation
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subthreshold stimulation of a neuron make it more responsibe to further stimulation
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Ganglion
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Mass of neuron cell bodies, usually outside the central nervous system
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Meninges
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(3) members that cover the brain and spinal cord
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Myelin
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fatty material that forms sheathlike coverng around some nerve fibers
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Neurilemma
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sheath formed from schwann cells on outside of some nerve fibers
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Neurotransmitter
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somatic nervous system
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Parasympathetic Nervous System
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Portion of autonomic nervous system that arises from brain and sacral region of spinal cord.
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Peripheral Nervous system
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Portions of nervous system outside central nervous system
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Reflex Arc
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Nerve pathway, osnsisting of a snsory neuron, internueron, and motor neuron, that forms the structural and functional losses for a reflex
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Sensory Neuron
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Neuron that transmits and impulse from a receptor to te central nervous system
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diagram
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