What is the gap between two neurons called?

The gap between two neurons is called the synaptic cleft. This term refers specifically to the small space that exists between the presynaptic neuron, which sends the signal, and the postsynaptic neuron, which receives the signal. When an electrical impulse travels down the presynaptic neuron, it triggers the release of neurotransmitters into the synaptic cleft. These neurotransmitters then bind to receptors on the postsynaptic neuron, facilitating the transmission of the nerve signal.

Recognizing the precise terminology is important in understanding how communication occurs between neurons. The synaptic cleft plays a crucial role in neurotransmission, making it vital for the functioning of the nervous system. Although terms like "synaptic gap" and "neural junction" are sometimes used informally, they do not accurately describe the precise nature of the space involved in neuron communication as well as "synaptic cleft" does. The term "electrical cleft" is not commonly used in this context and may lead to confusion in understanding neural signaling. Thus, the identification of the gap specifically as the synaptic cleft highlights an important aspect of neurobiology.