Course of the facial nerve . Arrow indicates the site of infarct. The facial motor nucleus is located in the lower third of the pons. The nerve roots, after arising from the motor nucleus, pass around the abducens nerve nucleus as they emerge from the brainstem. In our patient, the infarct affected the part between the facial nerve motor nucleus of and the abducens nerve nucleus sparing the abducens nerve. Arrow indicates the site of the infarct.