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The fine structure of the ependymal surface of the recessus infundibularis in the rat






Anatomy and Embryology 151(3): 241-266

The fine structure of the ependymal surface of the recessus infundibularis in the rat

The surface of the recessus infundibularis of the 3rd ventricle has been studied with the scanning and transmission technique in normal and experimental material. Surface specializations such as microvilli, craters and areas of discontinuous lining are described. Supraependymal cells and fibers have been found; some of these cells form wide-meshed networks. The supraependymal fibers may be regular or varicose; the former seem to perforate the ependyma. With the transmission electron microscope the supraependymal cells are divided into 3 categories: nerve cells, lymphocytes and dense cells. Two fiber populations are distinguished: thin profiles (nerve fibers) and thick profiles (nerve terminals). Axosomatic and axoaxonic synapses are described. Synapses between supraependymal fibers and ependyma cells also are found.

Accession: 006677692

PMID: 603079

DOI: 10.1007/bf00318929

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Related references

Wittkowski, W., 1969: Ependymal secretion and receptors in the wall of the recessus infundibularis in mice and their relationship to the small-cell hypothalamus. Zeitschrift für Zellforschung und Mikroskopische Anatomie 93(4): 530-546

Takeichi, M., 1967: The fine structure of ependymal cells. II. An electron microscopic study of the soft-shelled turtle paraventricular organ, with special reference to the fine structure of ependymal cells and so-called albuminous substance. Zeitschrift für Zellforschung und Mikroskopische Anatomie 76(4): 471-485

Takeichi, M., 1967: The fine structure of ependymal cells. Part 2: an electron microscope study of the soft-shelled turtle paraventricular organ with special reference to the fine structure of the ependymal cells and so-called albuminous substance. Zeitschrift fuer Zellforschung und Mikroskopische Anatomie, 76: 471-485

Cabanes, J., 1978: Asymptomatic persistence of infundibularis recessus. A congenital malformation of the anteroinferior aspect of the 3rd ventricle is described in a woman. This anomaly was found only rarely in anatomical descriptions. The embryological development of the pituitary region is described.

Singh D.R.; Hasan M.; Bajpai V.K.; Maitra S.C., 1980: Surface fine structure of the ependymal lining of the rat 4th ventricle. The floor of the rat brain 4th ventricle was divided into 5 zones to study the surface ultrastructure of the ependymal cells by scanning electron microscopy. Regional variations in the form of dense ciliation, sparse ciliation, central tufts of ci...

Cabanes, J., 1978: Asymptomatic persistence of infundibularis recessus. Case report. A congenital malformation of the anteroinferior aspect of the 3rd ventricle is described in a woman. This anomaly was found only rarely in anatomical descriptions. The embryological development of the pituitary region is described.

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Wittkowski, W., 1968: Elektronenmikroskopische Studien zur intraventrikularen Neurosekretion in den Recessus infundibularis der Maus. Zeitschrift fuer Zellforschung und Mikroskopische Anatomie, 92: 207-216

Wittkowski, W., 1968: Electron microscopic studies of the intraventricular neurosecretion in the recessus infundibularis of the mouse. Zeitschrift für Zellforschung und Mikroskopische Anatomie 92(2): 207-216

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