Adjacent neurons with direct (non-neurotransmitter)action potential transfer are said to have electrical synapses, based on the presence of
A) tight junctions at their point of contact.
B) gap junctions at their point of contact.
C) leaky junctions at their point of contact.
D) anchoring junctions at their point of contact.
E) desmosomes at their point of contact.

Question

Quizplus · Accepted Answer

Gap junctions are the structures found at the point of contact between adjacent neurons in an electrical synapse. These junctions allow for direct transfer of ions and small molecules between the two neurons, which is what enables the electrical signal to propagate from one neuron to the next. Tight junctions, leaky junctions, anchoring junctions, and desmosomes are all types of junctions found between cells, but they are not involved in the direct transfer of electrical signals.

Adjacent Neurons with Direct (Non-Neurotransmitter)action Potential Transfer Are Said to Have