The subcommissural organ of the adult and pouch-young brush-tailed possum (Trichosurus vulpecula)

Rs, Tulsi

doi:10.1007/bf00234332

Cell Tissue Res.

1979

DOI: 10.1007/bf00234332

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The subcommissural organ of the adult and pouch-young brush-tailed possum (Trichosurus vulpecula)

Tulsi Rs

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Cited by 2 publications

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Neural elements associated with the subcommissural organ of the brush-tailed possum (Trichosurus vulpecula)

Tulsi

1983

Cell Tissue Res.

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By means of various techniques and on the basis of a large sampling of the brush-tailed possum, Trichosurus vulpecula, a detailed description is given of the morphology of the neural elements associated with the subcommissural organ (SCO) and the leptomeninges on the dorsal surface of the midbrain. It is shown that the SCO of the possum is richly innervated, the nerves reaching the cerebral aqueduct by passing through the organ; there is, however, no evidence of a neural link between the SCO and the pineal gland. No typical axo-glandular synapses were found; however, many axo-glandular synaptoid junctions between axons and secretory cells of the SCO were demonstrable within the parenchyma of the SCO and on the aqueductal surface of the organ. The possible functional implications of the findings are: (1) The secretory activity of the SCO may be modified by nerves associated with it; this is in accord with some recently published experimental studies. (2) The nerves that innervate the SCO may also be responsible for ciliary activity on the aqueductal surface of the SCO, thus directing the apical secretory product of the SCO and debris flowing caudally in the cerebrospinal fluid into the poorly ciliated median groove where Reissner's fibre is found.

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Neural elements associated with the subcommissural organ of the brush-tailed possum (Trichosurus vulpecula)

Tulsi

1983

Cell Tissue Res.

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Identification and Morphologic Assessment of Mesocoelic Recess by In Vivo Human Brain Imaging With 7.0-T Magnetic Resonance Imaging

Kim¹,

G.²,

Choi³

et al. 2011

Journal of Computer Assisted Tomography

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This study on the anatomy of the MCR of adult brains in vivo is the first of its kind, thanks to the availability of 7.0-T MRI because it has been barely discernible even in autopsy specimens as well as in radiology owing to the resolution limit of the currently available imaging system. The current study raises awareness of the MCR, an important but little-known anatomic structure in adult human brain. This visualization of MCR in human in vivo with ultrahigh-field MRI will certainly provide us important clues including the functional information of MCR, a mystery of modern neurological science.

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The subcommissural organ of the adult and pouch-young brush-tailed possum (Trichosurus vulpecula)

Cited by 2 publications

References 18 publications

Neural elements associated with the subcommissural organ of the brush-tailed possum (Trichosurus vulpecula)

Neural elements associated with the subcommissural organ of the brush-tailed possum (Trichosurus vulpecula)

Identification and Morphologic Assessment of Mesocoelic Recess by In Vivo Human Brain Imaging With 7.0-T Magnetic Resonance Imaging

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