Abstract
Although as early as 1900 CUSHING believed that wide, valve-like passages linked the meningeal spaces to the adjacent veins, the work of WEED persuaded him that these passages did not exist (1,2). The concept that the arachnoid villus is a blind diverticulum of arachnoid that projects into a venous channel, and that it serves as a membrane through which cerebrospinal fluid passes into the blood stream was then widely accepted, WELCH and FRIEDMAN (3) reported in 1960 that the arachnoid villus of the monkey forms a labyrinth of small tubules that establish open connections between the subarachnoid space and the venous blood and they felt that these tubules had a valve-like function. This would imply a pressure-dependent passive mechanism for the passage of cerebrospinal fluid through the arachnoid villus.
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References
CUSHING, H.: Studies on the cerebro-spinal fluid. I. Introduction. J. Med. Res. 31, 1–19 (1914).
WEED, L.H.: Studies on cerebro-spinal fluid. III. The pathways of escape from the subarachnoid spaces with particular reference to the arachnoid villi. J. Med. Res. 31, 51–91 (1914)
WELCH, K., FRIEDMAN, V.: The cerebrospinal fluid valves. Brain 83, 454–469 (1960).
ALKSNE, J.F., LOVINGS, E.T.: Functional ultrastructure of the arachnoid villus. Arch. Neurol. 27, 371–377 (1972).
TRIPATHI, R.C.: Ultrastructure of the arachnoid mater in relation to outflow of cerebrospinal fluid. A new concept. Lancet ii, 8–11 (1973).
GOMEZ, D.G., POTTS, D.G., DEONARINE, V., REILLY, K.F.: Effects of pressure gradient changes on the morphology of arachnoid villi and granulations of the monkey. Lab. Invest. 28, 648–657 (1973).
GOMEZ, D.G., POTTS, D.G., DEONARINE, V.: Arachnoid granulations of the sheep. Arch. Neurol. 30, 169–175 (1974).
JAYATILAKA, A.D.P.: Arachnoid granulations in sheep. J. Anat. 99, 315–327 (1965).
GOMEZ, D.G., POTTS, D.G.: The surface characteristics of arachnoid granulations; a scanning electron microscopic study. Arch. Neurol, (in press).
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© 1975 Springer-Verlag Berlin Heidelberg
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Potts, D.G., Gomez, D.G. (1975). Arachnoid Villi and Granulations. In: Lundberg, N., Pontén, U., Brock, M. (eds) Intracranial Pressure II. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-66086-3_9
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DOI: https://doi.org/10.1007/978-3-642-66086-3_9
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