neuromuscular transmission

Neuromuscular transmission is the process by which nerve cells communicate with muscle cells to produce movement. When a nerve signal reaches the end of a nerve fiber (axon terminal), it triggers the release of chemicals called neurotransmitters, primarily acetylcholine. These molecules cross a small gap called the synaptic cleft and bind to receptors on the muscle cell's surface, initiating an electrical signal within the muscle. This electrical signal causes the muscle fibers to contract. Afterward, the neurotransmitters are broken down or taken away, ending the signal and allowing the muscle to relax until the next nerve impulse.