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  • Ciliated neurons  (1)
  • Cobaltfilling  (1)
  • 1
    Electronic Resource
    Electronic Resource
    The extracranial portion of the pineal complex of the frog (frontal organ) is connected to the pineal, the hypothalamus, the brain stem and the retina (1983)
    Springer
    Experimental brain research 53 (1983), S. 193-196 
    Details
    ISSN: 1432-1106
    Keywords: Frontal organ ; Rana esculenta ; Cobaltfilling ; Connections
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The central connections of the frontal organ of the frog Rana esculenta were studied by means of the cobalt-filling technique using the cobaltic lysine complex. The results showed that the frontal organ has suprisingly more extended connections than those demonstrated after the application of other techniques. In fact, we found that it is connected to the pineal, the hypothalamus, the brain stem and the retina. These connections, which neuroanatomically have not been reported before, suggest that the frontal organ of the frog participates, in some way, in several different functions, such as neuroendocrine activities, motor responses and lateral eyes photoreception interaction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00239412
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Non-ependymal cilia in the habenulae and the interpeduncular nucleus of the frog tadpole (1978)
    Springer
    Cell & tissue research 195 (1978), S. 527-533 
    Details
    ISSN: 1432-0878
    Keywords: Ciliated neurons ; Habenula ; Interpeduncular nucleus ; Electron microscopy ; Rana esculenta, tadpole
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Cilia of the 9+2 pattern are found electron microscopically in nonependymal cells of the habenulae and the interpeduncular nucleus of the tadpole of Rana esculenta at an early stage of development (8 mm length, head to tip of tail). A comparison is made between these and the ependymal and sensory cilia in the same specimens. The cilia project into the neuropil emerging from a perikaryon rich in free ribosomes and displaying a prominent Golgi apparatus. These perikarya contain dense core vesicles. Synapses with vesicles of the clear spherical type have been observed along the ciliary shaft. On a purely morphologic basis the authors hypothesize that these cilia, at least in this early ontogenetic stage, may extend considerably the conducting surface of the cell and represent a sensory structure which could be stimulated by terminal processes belonging to distantly located cells. In addition, they could also be involved in the trophic exchange of material with the adjacent structures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00233894
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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