From the posterior wall of the
saccule
The saccule is a bed of sensory cells in the inner ear. It translates head movements into neural impulses for the brain to interpret. The saccule detects linear accelerations and head tilts in the vertical plane. When the head moves verticall ...
a canal, the endolymphatic duct, is given off; this duct is joined by the
ductus utriculosaccularis, and then passes along the
aquaeductus vestibuli and ends in a blind pouch (
endolymphatic sac
From the posterior wall of the saccule a canal, the endolymphatic duct, is given off; this duct is joined by the utriculosaccular duct, and then passes along the vestibular aqueduct and ends in a blind pouch, the endolymphatic sac, on the poster ...
) on the posterior surface of the
petrous portion of the
temporal bone
The temporal bones are situated at the sides and base of the skull, and lateral to the temporal lobes of the cerebral cortex.
The temporal bones are overlaid by the sides of the head known as the temples, and house the structures of the ears. ...
, where it is in contact with the
dura mater
In neuroanatomy, dura mater is a thick membrane made of dense irregular connective tissue that surrounds the brain and spinal cord. It is the outermost of the three layers of membrane called the meninges that protect the central nervous system. ...
.
Disorders of the endolymphatic duct include
Meniere's Disease and
Enlarged Vestibular Aqueduct.
Additional images
File:Gray902.png, Transverse section through head of fetal sheep, in the region of the labyrinth. X 30.
File:Gray927.png, Transverse section of a human semicircular canal and duct
References
External links
*
The Endolymphatic Duct and Sac
Vestibular system
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