![]() ![]() The flocculo-nodular lobe is usually supplied by 2 arteries: the flocculus is supplied by the AICA and the nodulus is supplied by the PICA. It supplies the lobulus semilunaris inferior, the lobulus gracilis, the lobulus biventer, the tonsilla cerebelli, and, in the vermis, the clivus, the tuber, the pyramis, the uvula and the nodulus. Aim: To study the operative approaches for posterior inferior cerebellar artery (PICA) aneurysms or understanding the different pathologies that can affect this artery, and to present detailed knowledge of this arterys anatomy. in anatomy, biochemistry, microbiology, pathology, and physiology. The PICA usually arises from the VA an average of 8.6 mm above the foramen magnum but sometimes originates from the VA as low as 24 mm below the foramen. The PICA always gives rami to the group of arteries supplying the dorsal medullary territory, but rarely participates to the supply of the lateral medullary territory. branch of vertebral arteries PICA wallenberg syndromeThe CCEB reserves the right. The posterior inferior cerebellar artery (PICA), usually the largest branch of the VA, arises from its intradural segment approximately 1.5 cm from the origin of the BA. When the posterior inferior cerebellar artery (PICA) is hypoplastic, AICA takes over the territory usually supplied by the lateral branch of the PICA. It usually supplies the lateral territory of the lower part of the pons, the middle cerebellar peduncle, the flocculus and the neighbouring lobules of cerebellum. Manifestations of PICA territory infarction include vertigo, headache, gait ataxia, limb ataxia, and nystagmus.284 Headache is usually unilateral, occurring in cervical, occipital, or both regions. The anterior inferior cerebellar artery (AICA) irrigates a ponto-cerebellar territory. The dentate nucleus belongs to this territory. The authors describe the microsurgical anatomy of the posterior inferior cerebellar artery (PICA) with an extradural origin and discuss its importance as a common variation. The superior part of the cerebellum supplied by this artery includes the following lobules: lobulus anterior, lobulus simplex, lobulus semilunaris superior, and, in the vermis, lobulus centralis, culmen and clivus. The superior cerebellar artery (SCA) supplies a small brain stem territory, located on the dorsal tegmentum and the tectum of the upper part of the pons. They are based on a neuropathological study of 64 cases of cerebellar infarctions, the detailed study of which is reported elsewhere. Like other structures in the central nervous system, the cerebellum consists of grey matter and white matter: Grey matter located on the surface of the cerebellum. Anatomical drawings of the territory of these arteries are presented. Anatomical Structure and Divisions The cerebellum consists of two hemispheres which are connected by the vermis, a narrow midline area. Origin, course and distribution of the cerebellar arteries and of their branches are described. ![]()
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