<prompt> Dorsal surface of pons is related with?Trochlear nucleusMotor nucleus of vagusHypoglossalFacial  <response>: The pons can be broadly divided into two pas: the basilar pa of the ponsventral and the pontine tegmentum dorsalThe pontine tegmentum contains nuclei of the cranial nerves -5,6,7,8 and their associated fibre tracts, the pontine reticular formation, the mesopontine cholinergic system, the laterodorsal tegmental nucleus, and the respiratory centres - the pneumotaxic centre and the apneustic centre.Trochlear nucleus is in the midbrain whereas hypoglossal and vagal nuclei in the medulla.Reference: vishram Singh textbook of clinical neuroanatomy second edition pg 80 