It includes the space known as our synaptic cleft. And it also includes our cell that is receiving that signal. And basically, this is our system that allows for the transmission of the electrical signal from one cell to the other cell. Now, to describe how the electrical signal is actually passed down from the neuron to some cell, let's focus on a specific type of synapse known as the neuromuscular junction. The neuromuscular junction is a synapse that includes a neuron as well as a muscle cell. So this is our neuron.