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An Ultrastructural

Dan Bagger-Sjöbäck, MD, PhD; Ulla Friberg, MD; Helge Rask-Andersen, MD, PhD

Arch Otolaryngol Head Neck Surg. 1986;112(4):398-409.

Abstract
• In observing the fine structure of the human endolymphatic sac (ES) by transmission electron microscopy, we defined the cytologic characteristics of the epithelial lining of the various portions of the sac and identified five types of epithelial cells with presumably somewhat different functions. The morphologic findings may suggest that the human ES is involved in endolymph resorption and phagocytosis. In addition, there are indications that in humans the sac may be involved in pressure regulation in the internal ear. The ES has a possible role in the turnover of macular statoconia.

(Arch Otolaryngol Head Neck Surg 1986;112:398-409)

Author Affiliations
From the Departments of Otolaryngology, Karolinska Hospital, Stockholm (Dr Bagger-Sjöbäck), and University Hospital, Uppsala, Sweden (Drs Friberg and Rask-Andersen).

Footnotes
Accepted for publication June 14, 1985.

Reprint requests to Department of Otolaryngology, University Hospital, S-751 85 Uppsala, Sweden (Dr Friberg).

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