what is synapse
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synapse, also called neuronal junction, the site of transmission of electric nerve impulses between two nerve cells (neurons) or between a neuron and a gland or muscle cell (effector). A synaptic connection between a neuron and a muscle cell is called a neuromuscular junction.
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- The synapse, also known as the neuronal junction, is where electric nerve impulses are transmitted between two nerve cells (neurons) or between a neuron and a gland or muscle cell (effector).
- A synaptic connection that links a neuron to a muscle cell is known as a neuromuscular junction.
- Each nerve fiber's terminal swells to form a knoblike structure at a chemical synapse, which is separated from the fiber of a neighbouring neuron by a small area called the synaptic cleft.
- Synaptic clefts are about 0.02 micron in width.
- When a nerve impulse reaches the presynaptic terminals, membrane-bound sacs, or synaptic vesicles, migrate toward the presynaptic membrane and fuse with it, releasing a chemical substance known as a neurotransmitter.
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