<prompt> Hypoglossal nucleus lies onMid brainPonsMedullaLower pons  <response>: Hypoglossal nucleus is an elongated column of grey matter extending throughout the length of medulla oblongata in the paramedian plane. Note: Midbrain - nuclei of 3,4 cranial nerves Pons - nuclei of 5,6,7,8 cranial nerves Medulla- nuclei of 9,10,11,12 cranial nerves Ref: Vishram Singh textbook of clinical neuroanatomy second edition pg -91, 92 