Fracture faces of the junctional complexes in the reticular membrane of the organ of corti

S. Iurato Department of Bioacoustics of the, University of Bari, Italy

K. Franke ENT Clinic University of Milan, Italy

L. Luciano Laboratory of Electron Microscopy, Department of Anatomy, School of Medicine, Hannover, BRD University of Milan, Italy

G. Wermbter Laboratory of Electron Microscopy, Department of Anatomy, School of Medicine, Hannover, BRD University of Milan, Italy

E. Pannese Second Institute of Human Anatomy, University of Milan, Italy

E. Reale Laboratory of Electron Microscopy, Department of Anatomy, School of Medicine, Hannover, BRD University of Milan, Italy

Abstract

The junctional complexes in the reticular membrane of the organ of Corti have been investigated in chinchilla inner ear by the freeze-fracture method. Extremely developed zonulae occludentes were observed where the supporting cells contact each other and the sensory cells. These junctions can be considered “very tight” and completely seal off the tunnel of Corti, Nuel's space and the outer tunnel from the endolymph, as observed by investigations carried out by using tracers. The zonulae occludentes between Hensen's cells are always uninterrupted but considerably lower than among supporting and sensory cells.

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Fracture faces of the junctional complexes in the reticular membrane of the organ of corti

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Fracture faces of the junctional complexes in the reticular membrane of the organ of corti

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