Browse the glossary using this index
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Action Potential the voltage difference across a nerve cell membrane when the nerve is excited |
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Afferent Neuron a neuron that carries impulses from sensory receptors to the central nervous system; also called a sensory neuron |
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Axon an extension of cytosol that carries nerve signals away from the nerve cell body |
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Chemical Synapse a synapse in which a neurotransmitter moves from a presynpatic cell to a postsynaptic cell through the synaptic cleft |
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Dendrite a projection of cytosol that carries signals toward the nerve cell body |
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Efferent Neuron a neuron that carries impulses from the central nervous system to skeletal muscles; also known as a motor neuron |
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Electrical Synapse a synapse in which the presynaptic cell makes direct contact with the postsynaptic cell, allowing current to flow via gap junctions between the cells |
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Glial Cell a non-conducting cell that is important for the structural support and metabolism of nerve cells |
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Interneuron a local circuit neuron of the central nervouse system that relays impulses between afferent (sensory) and efferent (motor) neurons |
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Ion Channel a protein embedded in the plasma membrane that allows ions to pass through it |
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