An electrical synapse is characterized by...

An electrical synapse is characterized by...

• A. Uses neurotransmitters
• B. Junction between neurons
• C. Site of cerebrospinal fluid production
• D. Direct ion flow between cells

Answer: (D)

Direct ion flow through gap junctions linking adjacent neurons is the hallmark of an electrical synapse. These gap junction channels create direct cytoplasmic connections, so ions and small molecules can move straight from one neuron to the next. That lets electrical signals spread almost instantaneously and, often, in both directions, helping synchronize the activity of neuronal groups. This is different from chemical synapses, which rely on neurotransmitter release into a synaptic cleft and receptor binding to transmit signals more slowly and typically in one direction. The site where cerebrospinal fluid is produced is unrelated to synaptic transmission.

Direct ion flow through gap junctions linking adjacent neurons is the hallmark of an electrical synapse. These gap junction channels create direct cytoplasmic connections, so ions and small molecules can move straight from one neuron to the next. That lets electrical signals spread almost instantaneously and, often, in both directions, helping synchronize the activity of neuronal groups. This is different from chemical synapses, which rely on neurotransmitter release into a synaptic cleft and receptor binding to transmit signals more slowly and typically in one direction. The site where cerebrospinal fluid is produced is unrelated to synaptic transmission.