Cerebrovascular abnormalities. A book-atlas of macroscopic and microscopic aspects - Leon Danaila

In order to be able to reach a better understanding of the changes that can be observed at the level of the cerebral vascular structures both arterial and venous on the microscopy slides we shall begin with a short overview of the cerebrovascular development. The humoral theory of Hippocrates had made possible the beginning of the study of anatomy and according to it the disease was caused by the disturbances in the balance of the four 4 elemental body humours the black bile the yellow bile the blood and the phlegm. As an example epilepsy was believed to be caused by the phlegm which descended from the brain and prevented the pneuma the vital air from entering the blood vessels Gross 1987 . In the fourth century B. C. it had been registered a gradual change in the Grecian concepts of death a new trend which had been heralded by Plato 427 - 347 B. C. Danaila 2016 . Crucial to this process had been the dissertations of Socrates which had been described by Plato in the Phaedo dialogue. For Socrates 469 - 399 B. C. the body merely housed the soul therefore the fate of the corpse was of less concern Kevorkian 1959 . This school of thought had further evolved through Diogenes 412 - 323 B. C. and Aristotle 384 322 B. C. .