Nerve-muscle junction. False-colour transmission electron micrograph of a neuromuscular synapse,the junction between a motor neurone axon (nerve fibre) & a muscle fibre. At centre (yellow) 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 (brown) provides the nerve with structural and metabolic support. Magnification: x9,800 at 35mm size | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Fawcett, Don W. |
Bildgröße: | 5091 px × 3502 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
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