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Chapter 3 Terms
Terms for Chapter 3
10
Psychology
Undergraduate 1
09/08/2011

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Term
Neuron
Definition
nerve cell specialized for communication
Term
Dendrite
Definition
portion of neuron that receives signals
Term
Axon
Definition
portion of neuron that sends signals
Term
Synaptic vesicle
Definition
space between two connecting neurons through which messages are transmitted
Term
Neurotransmitter
Definition
chemical messenger specialized for communication between neurons
Term
Synapse
Definition
Space between two connecting neurons through which messages are transmitted chemically
Term
Synaptic cleft
Definition
a gap into which neurotransmitters are released from the axon terminal
Term
Glial cell
Definition
cell in nervous system that plays a role in the information of myelin and the blood-brain barrier, responds to injury, removes debris, and enhances learning and memory
Term
Myelin sheath
Definition
glial ells wrapped around axons that act as insulators of the neuron's signal
Term
Resting potential
Definition
electrical charge difference (-60 millivolts) across the neuronal membrane, when the neuron is not being stimulated or inhibited
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