All the other cells, this cell, this cell and this cell and these other cells are not actually connected to our neuron directly. So in our single unit smooth muscle, what we have are gap junctions. So all these different types of cells that are connected are connected via these intracellular connections known as gap junctions. And what these gap junctions do is they basically allow the movement of ions through the cells and that allows the propagation of our action potential. So what that means is as our action potential travels through the axon from the autonomic nervous system, it basically innervates these two cells. And these two cells basically undergo that contraction.