<prompt> Which of the following is not a component of medial column of reticularRaphe nucleiMagnocellularSub cuneiform nucleusCuneiform nucleus  <response>: Medial column of nuclei are made up of large size neurons hence this column is called magnocellular column.The medial group of nuclei consists of ventral reticular nucleus medulla, gigantocellular nucleus medulla and pons and oral and caudal pontine nuclei pons.Raphe nuclei forms the median column of reticular formation. It consists of dorsal raphe nucleus midbrain, nucleus raphe pontis pons, nucleus raphe magnus medulla.The midbrain reticular formation consists of the dorsal tegmental nucleus, ventral tegmental nucleus, and cuneiform nucleus. Along with the oral pontine reticular nucleus, the midbrain reticular formation projects to the nucleus gigantocellularis. 