The ependyma of the lateral ventricle in Acanthodactylus pardalis (Reptilia, Lacertidae)
Hetzel, W.
Acta Anatomica 97(1): 68-80
1977
ISSN/ISBN: 0001-5180 PMID: 848263 Document Number: 118291
Within the lateral ventricles of the brain of A. pardalis, different zones of ependymal cells are recognizable through their fluctuating changes from one into the other. The frontal pole of the hemisphere shows a rather homogeneous ependyma whose cells lay together. Cell fibers are not visible. Farther caudally, the ventricular wall is subject to some alterations; there are more long-shaped cell nuclei. The ventricular sulci are areas of different ependymal structures. The sulcus terminalis represents a zone of dense-laying cells, whose nuclei possess in several regions more round or more elongated forms. An apical cytoplasmatic border and cilia are often clearly built out. The sulcus lateralis and the sulcus septo-archipallialis have a dense cell layer. The region below the medial cortex, near the sulcus septo-archipallialis, shows tanycytes with long basal fibers. The ependyma of the dorsal striatum shows dorsally and laterally, at the ventricle, areas with loosely arranged cells. The orientation of the cell nuclei to the ventricular surface is variable, especially at the ventricular wall of the septum and the opposite of the striatum, where cell nuclei are found whose axis lays no more vertical but parallel to the ventricular surface.