At the extremity of the modiolus, the two passages communicate with each other.
The Latin term for the trephine, modiolus, has the same meaning.
modiolus, mo-dī′o-lus, n. the central stem round which wind the passages of the cochlea of the internal ear.
Name from modiolus, the broad and depressed fruit resembling in shape the Roman measure of that name.
modiolus mo·di·o·lus (mō-dī'ə-ləs)
n. pl. mo·di·o·li (-lī')
The central conical bony core of the cochlea of the ear.