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Synapse

Editor · Aug 20, 2017 ·

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Synapse medical illustration
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Nerve cells communicate with each other when the synaptic end bulb on the axon of one cell makes contact with a dendrite or cell body of another. Nerve cell impulses are conducted from one cell to another across this connection, called a synapse.

The end bulb contains synaptic vesicles which are filled with a neurotransmitter substance. When a nerve impulse travels down the axon and reaches the end bulb the neurotransmitter is released into a small space, the synaptic cleft. Here it interacts with the membrane of the adjoining cell initiating a new impulse in that cell.

Many diseases of the brain and psychiatric disorders result from a disruption of synaptic communication. Synapses are also the sites of action for many drugs that affect the brain.

See Also:

  • Neuron - (nerve cell)Neuron - (nerve cell)
  • Sensory Input, Motor ResponseSensory Input, Motor Response

Nervous neuron

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