Neuron and Glial Cell Terms

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9 Terms

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Dendrites

Carry a depolarization wave towards the soma.

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Axon

Delivers an action potential to the axon terminal, which causes the release of a neurotransmitter into the synaptic cleft.

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Axon Terminal of Presynaptic Neuron

Deliver neurotransmitters to the postsynaptic neuron, muscle, gland, or organ.

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Myelin Sheath of Schwann Cell

Insulates axon and speeds impulse.

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Soma

Cell Body

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Nissl Bodies

Specialized RER. Involved in protein synthesis.

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Node of Ranvier

Noninsulated area of an axon between Schwann cells. This is the only area of ion exchange along a myelinated axon. 

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Nucleus

Control center

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Axon Hillock

The trigger zone. If a depolarization wave that reaches the area is strong enough, an action potential occurs (nerve impulse).