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21 Cards in this Set
- Front
- Back
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The change in the electrical charge of a neuron that occurs when the neuron has been activated by a stimulus.
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action potential
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Another name for sensory neurons.
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afferent neurons
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Drugs that produce the same effects as a specific neurotransmitter by causing neurons to fire.
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agonists
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Drugs that inhibit the effects of a neurotransmitter
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antagonists
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The single fiber that conducts action potentials away from a neuron's cell body.
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axon
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The part of a neuron that contains the nucleus & upon which the dendrites converge.
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cell body
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One of the two major components of the nervous system; consists of the nerves in the brain & spinal cord.
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central nervous system
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A network of filaments at one end of a neuron that carry information to the neuron's cell body.
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dendrites
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Another name for motor neurons.
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efferent neurons
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Special cells that, along with neurons, form the complex network of the nervous system.
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glial cells
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Neurons that carry information from neuron to neuron.
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interneurons
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Neurons that carry information from the brain to the muscles.
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motor neurons
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A fatty material that forms a protective sheath over the axons of neurons & speeds up the conduction of action potentials.
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myelin
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Individual nerve cells, which are the basic building blocks of the nervous system.
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neurons
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A chemical released by a neuron to relay information to other neurons.
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neurotransmitter
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The gaps within the myelin sheath that covers the axon of a neuron.
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nodes of Ranvier
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One of the 2 major components of the nervous system; consists of all nerves beyond those in the central nervous system.
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peripheral nervous system
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The period between an action potential & a resting potential, during which a neuron cannot fire.
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refractory period
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The electrical charge across the cell membrane of a neuron at rest.
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resting potential
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Neurons that carry info. from various sense organs to the brain.
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sensory neurons
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The gap between nerve cells.
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synapse
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