Illustration of a motor neuron and muscle fibre. When a signal from the nervous system reaches the neuromuscular junction, acetylcholine is released by a motor neuron, or nerve cell. This chemical messenger binds to receptors on the muscle fibre membrane, which begins a chemical reaction within the muscle. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Science Source / Spencer Sutton |
Taille de l’image : | 3435 px × 2875 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |