[Vascular regions of the spinal cord].

In a material of 50 spinal cord specimens obtained from adults the radicular-anastomotic arteries were studied. After an analysis of the situation, diameter and connections of these arteries seven vascular regions were discerned in the cord: upper cervical region C1-C3, middle cervical region C4-C5, cervical intumescence region C6-C8, upper thoracic region Th1-Th3, middle thoracic region Th4-Th7, thoracolumbar intumescence region Th8-L4, and lumbosacral region L5-Co. Arterial systems found in these regions are described.