| distal spiral septum | See: spiral septum. (05 Mar 2000) |
|---|---|
| internal spiral sulcus | A concavity in the floor of the cochlear duct formed by the overhanging labium vestibulare. Synonym: sulcus spiralis internus. (05 Mar 2000) |
| osseous spiral lamina | A double plate of bone winding spirally around the modiolus dividing the spiral canal of the cochlea incompletely into two, scala tympani and scala vestibuli; between the two plates of this lamina the fibres of the cochlear nerve reach the spiral organ (of Corti). Synonym: lamina spiralis ossea, spiral plate. (05 Mar 2000) |
| tympanic labium of limbus of spiral lamina | The lower, long periosteal extension of the limbus laminae spiralis osseae that rests on the basilar lamina of the spiral organ (of Corti). Synonym: labium limbi tympanicum laminae spiralis, tympanic lip of limbus of spiral lamina. Labium urethrae, one of the two lateral margins of the external urethral orifice of the female. (05 Mar 2000) |
| tympanic lip of limbus of spiral lamina | The lower, long periosteal extension of the limbus laminae spiralis osseae that rests on the basilar lamina of the spiral organ (of Corti). Synonym: labium limbi tympanicum laminae spiralis, tympanic lip of limbus of spiral lamina. Labium urethrae, one of the two lateral margins of the external urethral orifice of the female. (05 Mar 2000) |
| external spiral sulcus | A concavity in the outer wall of the cochlear duct between the prominentia spiralis and the spiral organ. Synonym: sulcus spiralis externus. (05 Mar 2000) |
| limbus of bony spiral lamina | The border of the spiral lamina; the thickened periosteum covering the upper plate of the bony spiral lamina of the cochlea. Synonym: limbus laminae spiralis osseae. (05 Mar 2000) |