Nerve synapses on muscle, SEM

Nerve synapses on muscle, SEM

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Credit: DON W. FAWCETT/SCIENCE PHOTO LIBRARY

Caption: Nerve synapses. Coloured scanning electron micrograph (SEM) of the junctions between a nerve cell (yellow) and a muscle fibre (red). Such junctions are known as synapses. The nerve cell (motor neuron) ends in a group of pads called end plates. The end plate holds neurotransmitter chemicals. When activated, the end plate releases a neurotransmitter, which is taken up by receptors on the muscle's side of the synapse. This makes the muscle contract. In neuromuscular synapses such as this, the neurotransmitter is the chemical acetylcholine.

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Keywords: anatomical, anatomy, coloured, end plate, false-coloured, fibres, healthy, images, junction, magnified image, microscopic photos, motor neuron, muscle fibre, muscular, nerve cell, nervous system, neuromuscular, neurone, neurotransmitter, normal, plates, scanning electron micrograph, scanning electron microscope, sem, subjects, synapse, synapses

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