Vertical crest in the fundus of the internal auditory canal is k/a -: (A) Bill's bar, (B) Ponticulus, (C) Cog, (D) Falciform crest
Answer is A. The internal acoustic canal is divided by transverse crest (or Falciform crest) into a superior and inferior part. The superior part is divided by vertical crest or Bill's bar into anterior and posterior parts.