So sensory neurons are those neurons that connect to receptors. These receptors basically pick up stimuli, and this stimulus is transformed into an electrical signal by those sensory neurons of the somatic nervous system. So these somatic sensory neurons then carry our electrical signal via a single axon, as in this case, and they carry that signal to the backside, which is our dorsal side of our spinal cord. So the motor neurons leave from the front side, the ventral side. But the sensory neurons pick up those signals and carries them through the backside into our spinal cord. The backside is the dorsal side.