What type of synapse allows direct electrical coupling between neurons, enabling rapid signal transmission?

What type of synapse allows direct electrical coupling between neurons, enabling rapid signal transmission?

• A. Chemical synapses via neurotransmitter release
• B. Neurotransmitter-less synapse
• C. Electrical synapses via gap junctions
• D. Synaptic glial junctions

Answer: (C)

Electrical synapses provide direct electrical coupling between neurons via gap junctions, which are membrane channels that connect neighboring cells. They allow ions to pass straight from one neuron to the next, so the signal is transmitted almost instantly with very little delay. This enables rapid, often synchronized communication across neural networks. Because the transmission is through ion flow rather than neurotransmitter release, there’s no vesicle release or receptor binding in the cleft, which is why electrical synapses are faster than chemical synapses. The other options describe chemical signaling or are not standard neuronal structures, so they don’t produce this immediate coupling.

Electrical synapses provide direct electrical coupling between neurons via gap junctions, which are membrane channels that connect neighboring cells. They allow ions to pass straight from one neuron to the next, so the signal is transmitted almost instantly with very little delay. This enables rapid, often synchronized communication across neural networks. Because the transmission is through ion flow rather than neurotransmitter release, there’s no vesicle release or receptor binding in the cleft, which is why electrical synapses are faster than chemical synapses. The other options describe chemical signaling or are not standard neuronal structures, so they don’t produce this immediate coupling.