Chemical Synapse
A synapse, chemical signals called neurotransmitters cross these gaps, carrying on the signal.
exocytosis
Chemical diffusion
chemical synapse
Chemical
They act as an active "bridge".
The answer is NEUROTRANSMITTER.
Chemical synapses are specialized junctions through which neurons signal to each other and to non-neuronal cells such as those in muscles or glands. At a chemical synapse, one neuron releases a neurotransmitter into a small space (the synapse) that is adjacent to another neuron.
The synapse releases a chemical that can diffuse across the gap between two neurones. The synapse has a large surface area, which means diffusion of the chemical can occur at a higher rate.
a chemical that transmits a nervous systems signal across a synapse.
synapse