Chapter 5

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Last updated 4:43 PM on 9/23/26
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15 Terms

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Synaptic Transmission

Process of transferring information across a synapse.

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Synapse

Junction where one neuron communicates with another neuron or target cell.

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Who coined the term synapse?

Charles Sherrington in 1897.

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Who demonstrated chemical synaptic transmission?

Otto Loewi in 1921.

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Who helped demonstrate electrical synaptic transmission?

Furshpan and Potter in the late 1950s.

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Presynaptic Neuron

The sending neuron that releases neurotransmitter.

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Postsynaptic Neuron

The receiving cell containing neurotransmitter receptors.

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Direction of Information Flow in Most Synapses

From presynaptic neuron to postsynaptic cell.

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Electrical Synapse

Connection between cells through gap junctions allowing direct ion flow.

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Major Advantage of Electrical Synapses

Extremely fast transmission.

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Direction of Electrical Synapses

Usually bidirectional.

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Gap Junction

Direct channel connecting two cells.

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Connexin

Protein subunit that forms a connexon and enables direct cell-to-cell communication and metabolic support

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Connexon

Channel composed of six