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  • Digitale Medien  (3)
  • 1970-1974  (3)
  • Cell & Developmental Biology  (2)
  • Electron microscopy  (1)
  • 1
    Digitale Medien
    Digitale Medien
    Springer
    Cell & tissue research 145 (1973), S. 89-101 
    ISSN: 1432-0878
    Schlagwort(e): Glycogen body ; Avian lumbar spinal cord ; Aminergic innervation ; Drug treatment ; Glycogen bioassay ; Electron microscopy
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Beschreibung / Inhaltsverzeichnis: Zusammenfassung Mit der Methode von Falck-Hillarp lassen sich im Rückenmark der Vögel Bündel fluoreszierender Nervenfasern nachweisen, die in Höhe des Glykogenkörpers (Lumbalwulst) seitlich an dieses Organ grenzen, von wo aus zahlreiche Fasern in den Glykogenkörper eindringen. Vergleichend-anatomisch gehören die fluoreszierenden Areale des Rückenmarks zu den autonomen Zentren. Es wurde versucht, mit Pharmaka, die das autonome Nervensystem beeinflussen oder Krämpfe erzeugen, das Glykogen des Lumbalwulstes zu mobilisieren (Quantitative Glykogenbestimmung nach Krisman, 1962). Besondere Beachtung verdient die elektronenmikroskopische Feinstruktur der Zwickelräume zwischen den großen Glykogenkörperzellen, wo Ausläufer dieser Zellen und Nervenfasern eng beieinander liegen. Die Kapillaren des Glykogenkörpers werden fast vollständig von Ausläufern seiner Zellen umscheidet.
    Notizen: Summary With the method of Falck-Hillarp bundles of fluorescent nerve fibers were observed in the vicinity of the avian lumbar glycogen body. They encompass the glycogen body laterally. Numerous fluorescent fibers penetrate from this border zone into the glycogen. The fluorescent regions of the avian lumbar spinal cord belong to the autonomic centers. Attempts were made to decrease the high glycogen content of the glycogen body by administering drugs which act on the autonomic system, and also by using convulsant drugs. Glycogen was estimated quantitatively by the Krisman method (1962). Electron micrographs show that the triangular spaces between the enlarged cells of the glycogen body are occupied by the processes of these cells and by nerve fibers. The capillaries of the glycogen body are nearly completely ensheathed by the processes of the glycogen-body cells.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    New York, NY [u.a.] : Wiley-Blackwell
    The @Anatomical Record 168 (1970), S. 339-349 
    ISSN: 0003-276X
    Schlagwort(e): Life and Medical Sciences ; Cell & Developmental Biology
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Medizin
    Notizen: Various physiological and anatomical studies have suggested that the ciliary epithelium may be under the influence of adrenergic nerve fibers. This study was undertaken in an attempt to characterize the innervation of the ciliary epithelium. Both light and electron microscopy revealed that the ciliary epithelium is only sparsely innervated. In addition, the ciliary epithelium overlies a highly vascular stroma, and the distance between the large vascular channels and the ciliary epithelium is small. These features of the stroma indicate it is structurally suited for a transport function, a fact which supports earlier reports that the elaborate membrane infoldings of the ciliary epithelium are indicative of a transport function. The discrepancy between previous descriptions of the innervation of the ciliary epithelium, demonstrating complex subepithelial plexuses of adrenergic nerve fibers, and the results of the present study may be due to the fact that the fluorescence technique used in previous studies could have labelled some other tissue component in addition to adrenergic nerve fibers. Results with orcein and aldehyde fuchsin stains indicate that the disposition of elastic fibers in the ciliary processes is similar to previous descriptions of adrenergic nerve fibers as determined by fluorescent techniques.
    Zusätzliches Material: 8 Ill.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    New York, NY [u.a.] : Wiley-Blackwell
    The @Anatomical Record 179 (1974), S. 447-451 
    ISSN: 0003-276X
    Schlagwort(e): Life and Medical Sciences ; Cell & Developmental Biology
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Medizin
    Notizen: The number and spatial relations of muscle spindles in the extensor indicis have been determined. Approximately forty spindles lie adjacent to the motor end plate zone dispersed rather equally through this area of the muscle with a modest increase in density among the distally originating fibers. A study of the entire innervation pattern of this muscle has also been completed.These findings have greatly facilitated the isolation of spindles for electron microscopic study and attempts to perform in vivo recording from the sensory nerves of muscle spindles in this laboratory. It is now possible, with the aid of suitable magnification and stimulating and recording devices, to more rapidly find muscle spindles relative to the gross innervation and the easily located motor end plate zone.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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