Endolymphatic sac

Endolymphatic sac

Infobox Anatomy
Name = Endolymphatic sac
Latin = saccus endolymphaticus
GraySubject = 232
GrayPage = 1052


Caption =


Caption2 =
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MeshName = Endolymphatic+Sac
MeshNumber = A09.246.631.909.957.360.701
DorlandsPre = s_01
DorlandsSuf = 12717285
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 [Schuknecht HF. Pathology of the Ear. Philadelphia, Pa: Lea & Febiger; 1993:45–47, 50–51, 62, 64, 101] [Wackym PA, Friberg U, Bagger-Sjo¨ba¨ck D, Linthicum FH Jr,Friedmann I, Rask-Andersen H. Human endolymphatic sac: possible mechanisms of pressure regulation. J Laryngol Otol 1987; 101:768–779] [Yeo SW, Gottschlich S, Harris JP, Keithley EM. Antigen diffusion from the perilymphatic space of the cochlea. Laryngoscope 1995;105:623–628] [Rask-Andersen H, Danckwardt-Lilliestrom N, Linthicum FH, House WF. Ultrastructural evidence of a merocrine secretion in the human endolymphatic sac. Ann Otol Rhinol Laryngol 1991; 100:148–156] , as well as phagocytic [Fukuzawa K, Sakagami M, Matsunaga T, Fujita H. Endocytotic activity of the free floating cells and epithelial cells in the endolymphatic sac: an electron microscopic study. Anat Rec 1991; 230:425–433] and immunodefensive,functions [Wackym PA, Friberg U, Linthicum FH Jr, et al. Human endolymphatic sac: morphologic evidence of immunologic function. Ann Otol Rhinol Laryngol 1987;96:276–282] .

References

External links

* [http://oto.wustl.edu/cochlea/esac.htm Images at wustl.edu]


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