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 is the end of the nerve,closely associated with a muscle fibre (dense-packed structure at left). Inside the nerve clustered near to the muscle are small vesicles containing neurotransmitter chemicals. A nerve impulse causes neurotransmitter chemicals to pass across the gap (synaptic cleft) separating nerve from muscle; the chemicals stimulate or inhibit muscle receptors. A Schwann cell (top right) provides the nerve with structural and metabolic support. Magnification: x7350 at 35mm size | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Fawcett, Don W. |
Bildgröße: | 4728 px × 3567 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
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