ABSTRACT
Introduction The blood vessels to an organ provide it with a relatively constant supply of oxygen and other nutrients and a means for removal of metabolic waste. Failure to meet these vital requirements results in disease in that organ. Because of the unique structure and organization of the nervous sys tem, localized abnormalities in its blood supply may pro duce devastating alterations in neural function. In this chapter, the normal anatomy and physiology o f the vas cular supply to neural tissue and the clinical manifestations of pathologic processes affecting this system are described.