In A(n) ________ Synapse, Current Flows Directly Between Cells

Question

In a(n) ________ synapse, current flows directly between cells.
A) electrical
B) cell
C) chemical
D) osmotic
E) gap

Accepted Answer

Electrical synapses are characterized by direct flow of ions between adjacent cells through protein channels called gap junctions. This allows for very rapid communication between cells, and is important in processes such as cardiac and smooth muscle contraction, as well as the synchronization of neural activity. Chemical synapses, on the other hand, involve the release of neurotransmitters from one neuron that then bind to receptors on another neuron or cell, leading to a change in ion flow and ultimately signaling the receiving cell. Osmotic and cell synapses are not terms commonly used in neuroscience. Gap junctions are important in electrical synapses, but alone do not define the synapse.