Fig. 39. A. Gross anatomy of the right membranous labyrinth. Canal reuniens (c.r.); endolymphatic duct (e.d.); horizontal, anterior and posterior canals (HC, AC, PC); sacculus (Sa); Scarpa's ganglion (SG); utriculus (U); facial nerve (VII). (After Hardy M: Anat Rec 59:403, 1934.) B. Canal orientation in skull.