Endolymphatic sac
Encyclopedia
From the posterior wall of the saccule
a canal, the ductus endolymphaticus, is given off; this duct is joined by the ductus utriculosaccularis, and then passes along the aquaeductus vestibuli and ends in a blind pouch, the endolymphatic sac, on the posterior surface of the petrous portion
of the temporal bone
, where it is in contact with the dura mater
. Studies suggest that the endolymphatic duct and endolymphatic sac perform both absorptive and secretory , as well as phagocytic and immunodefensive,functions .
Saccule
The saccule is a bed of sensory cells situated in the inner ear. The saccule translates head movements into neural impulses which the brain can interpret. The saccule is sensitive to linear translations of the head, specifically movements up and down...
a canal, the ductus endolymphaticus, is given off; this duct is joined by the ductus utriculosaccularis, and then passes along the aquaeductus vestibuli and ends in a blind pouch, the endolymphatic sac, on the posterior surface of the petrous portion
Petrous portion
Petrous portion can refer to:* Petrous portion of the temporal bone* Petrous portion of the internal carotid artery...
of the temporal bone
Temporal bone
The temporal bones are situated at the sides and base of the skull, and lateral to the temporal lobes of the cerebrum.The temporal bone supports that part of the face known as the temple.-Parts:The temporal bone consists of four parts:* Squama temporalis...
, where it is in contact with the dura mater
Dura mater
The dura mater , or dura, is the outermost of the three layers of the meninges surrounding the brain and spinal cord. It is derived from Mesoderm. The other two meningeal layers are the pia mater and the arachnoid mater. The dura surrounds the brain and the spinal cord and is responsible for...
. Studies suggest that the endolymphatic duct and endolymphatic sac perform both absorptive and secretory , as well as phagocytic and immunodefensive,functions .