This specialized membrane contains in vaginations known as T tubules or transverse tubules that run perpendicular with respect to our myofriles and which run very deep into the cell. And they allow the action potential to actually travel through the cell quickly and efficiently. Now, how does the action potential actually get to the cell in the first place? Well, basically they arrive to the cell via the neurons, the axons of our neurons. So this is one particular neuron. We have the axon that basically deviates and eventually binds onto the membrane of the cell.