Hyde, John Baskerville
August 1957
Angiology;Aug1957, Vol. 8 Issue 4, p319
Academic Journal
Sunderland demonstrated that the primate cerebral cortex is dependent for its blood supply upon the arterial network of the pia mater. In the present study, more than 1000 arterial cross-sections have been measured in 12-μ sections from 40 samples of cerebral cortex and its covering of pia arachnoid that were taken from two fetal brains weighing 190 and 215 gm. Graphic analysis of these arterial diameters reveals a system of channels that increase in number as they decrease in size. Smallest and most numerous are the arterioles, 20 μ in diameter, that enter the cortex to supply its capillary bed. In these two fetuses, the largest arteries of the pia mater are about 500 μ in diameter. Measurement of the density of the pial arterial net and the sizes of the larger pial arteries in a larger series of brains is recommended as a necessary prelude to the study of the pial vessels in brain material from victims of certain cerebral disorders.


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