Neurons come in many sizes. For example, a single sensory neuron from your fingertip has an axon that extends the length of your arm, while neurons within the brain may extend
only a few millimeters. They also have different shapes depending on their functions. Motor neurons that control muscle contractions have a cell body on one end, a long axon in
the middle and dendrites on the other end. Sensory neurons have dendrites on both ends, connected by a long axon with a cell body in the middle. The Great Brain patch helps to
restore the energy that responds to memory and focus.