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 | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Fawcett, Don W. |
Taille de l’image : | 3917 px × 2568 px |
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