synaptic cleft

The synaptic cleft is the small gap between two neurons, or between a neuron and a muscle cell, where communication occurs. When a nerve impulse reaches the end of a neuron, it triggers the release of chemicals called neurotransmitters into this gap. These neurotransmitters then bind to receptors on the receiving neuron or muscle cell, transmitting the signal and enabling coordination of actions or responses. This process is crucial for transmitting information throughout the nervous system, influencing everything from muscle movement to mood and cognitive functions.