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The Hearing Aid Advice Centre Ltd, Audiology House,
Oakwood Park, Livingston,
UK,
EH54 8AW
01506 420519
0800 169 68 62
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Membranous Labyrinth |
Membranous
Labyrinth |
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The membranous labyrinth lies inside the
bony labyrinth and is filled with endolymph. It has three parts as in the
bony labyrinth:
- Three membranous semicircular canals inside the bony canals.
- Two sacs, the utricle and saccule, lodged in the bony vestibule.
- The cochlear duct lying within the canal of the bony cochlea.
The membranous semicircular canals are similar in shape to the bony canals
and each has one swollen end called the ampulla. The utricle is a sac which
receives the five openings of the membranous canals. The saccule is a smaller
sac and is joined to the cochlear duct by a narrow canal. From both the
utricle and the saccule a small duct is given off and these join to form
the endolymphatic duct which passes through the vestibule and ends blindly.
The blind end is slightly dilated and is called the endolymphatic sac.
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