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.
Supportsd by Grant No. NSO 9198.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
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).
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1975 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
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
Download citation
DOI: https://doi.org/10.1007/978-3-642-66086-3_9
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-66088-7
Online ISBN: 978-3-642-66086-3
eBook Packages: Springer Book Archive