Right human membranous labyrinth, removed from its bony enclosure and viewed from the antero-lateral aspect. Top image is antero-lateral and bottom image is postero-medial. # Lateral semicircular canal; 1’, its ampulla # Posterior canal; 2’, its ampulla # Superior canal; 3’, its ampulla # Conjoined limb of superior and posterior canals (sinus utriculi superior) # Utricle; 5’. Recessus utriculi; 5”. Sinus utriculi posterior # Ductus endolymphaticus # Canalis utriculosaccularis # Nerve to ampulla of superior canal # Nerve to ampulla of lateral canal # Nerve to recessus utriculi (in top image, the three branches appear conjoined); 10’. Ending of nerve in recessus utriculi # Facial nerve # Lagena cochleæ # Nerve of cochlea within spiral lamina # Basilar membrane # Nerve fibers to macula of saccule # Nerve to ampulla of posterior canal # Saccule # Secondary membrane of tympanum # Canalis reuniens # Vestibular end of ductus cochlearis # Section of the facial and acoustic nerves within internal acoustic meatus (the separation between them is not apparent in the section) # (No entry) # Vestibulocochlear nerve (auditory or acoustic, cranial nerve VIII)