Nerve-muscle junction. Coloured transmission electron micrograph of a neuromuscular synapse,the junction between a motor neurone axon (nerve fibre) and a muscle fibre. At centre (blue) is the end of the nerve,closely associated with a muscle fibre (red,at left). Small vesicles inside the nerve contain neurotransmitter chemicals clustered near to the muscle. A nerve impulse travelling up the nerve causes neurotransmitter chemicals to pass across the gap (synaptic cleft) separating nerve from muscle; the chemicals stimulate or inhibit muscle receptors. A Schwann cell (green) provides the nerve with structural and metabolic support. Mag; x9800 at 35mm,x19600 at 5x7cm size | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Fawcett, Don W. |
Taille de l’image : | 4628 px × 3267 px |
Model Release : | Non requis |
Property Release : | Non requis |
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