Cerebellar architectonics of the blood vessels following experimental ligation of the common carotid arteries in rabbits

Summary

In order to study the architectonics of the cerebellum in conditions of collateral circulation, simultaneous bilateral ligation of the common carotid arteries was carried out in 14 rabbits. No functional disturbances were noted in animals during the postoperative period. External arteries were studied on injected preparations of the cerebellum, while the internal arteries were examined on the total histological sections. When the bloodflow is disturbed in these vessels, there is a morphological change in the arteries of the brain and cerebellum. With time these morphological changes develop further. The angles of division, origin and fusion of various blood vessels is changed, their diameter increases, and their course becomes tortuous. The same changes take place in the internal cerebellar arteries i.e., sulcal arteries and short and long cortical branches which originate from them. There is modification in the vascular structure of the separate layers in the cerebellar cortex, as a result of which the borders between them become indistinct.