The terminal vascular bed in the superficial cortex of the rat. An SEM study of corrosion casts

Journal of Neurosurgery
E D MottiM G Yaşargil

Abstract

The capillaries in the vascular bed of the rat brain have been investigated by means of scanning electron microscopy of corrosion casts. A technique is described that allowed the finer ramifications to be observed. A series of representative sites from the arteriovenous terminal pathway are described in detail. Contrary to previous reports, the dichotomic pattern of vessel distribution is shown to prevail over the network pattern. Arteriovenous shunts of discrete size were not seen. "Thoroughfare channels" could be recognized. The findings are considered in light of current physiological knowledge, and their significance for microcerebrovascular flow is indicated.

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Methods Mentioned

BETA
scanning electron microscopy

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