Sensory neurons' cell bodies (DRGs) are located outside the spinal cord and send branches to the skin and brain.

“the so-called cell body, meaning the location of a cell in which the DNA and other goodies, the kind of central factory of the cell, that actually sits right outside your spinal cord. So, all up and down your spinal cord, on either side, are these little blobs of neurons, little collections of neurons. They're called DRGs, dorsal root ganglia. A ganglion is just a collection or a clump of cells. And those DRGs are really interesting because they send one branch that we call an axon, a little wire, out to our skin, and they have another wire from that same cell body that goes in the opposite direction, which is up to our brain, and creates connections within our brain, in the so-called brain stem, okay?”