And because of that, many of these cardiac muscle cells are connected by these gap junctions. So what's the function of these gap junctions? Well, basically, when one cell receives an action potential as a result of these gap junctions, the action potential can actually propagate into nearby cardiac myosytes. And what that does is it allows the creation of a continuous and a forceful contraction of the entire heart. And that allows the heart to pump all the blood throughout the cardiovascular system. Now, another example of these intercellular communications via gap junctions is in the muscle cells of the uterus.