• Alfa 2B and 2C: These receptors are present in the spinal chord and in the brain in noradrenergic neurons of the central nervous system mainly in the locus coeruleus and the dorsal spinal chord motor complex.
Alfa 2B y 2C: se encuentran en la medula espinal y en el cerebro en neuronas noradrenérgicas del sistema nervioso central principalmente locus coeruleus y complejo motor medular dorsal.