Trach O. Individual Anatomical Variability in the Medial Surface of the Occipital Lobe

Dissertation is devoted to the determination of the individual anatomical variability of the morphometric parameters of the occipital lobes, sulci and gyri of their medial surface, with the study of the structural features and blood supply of the formations of the medial surface of the occipital lobes. Using a complex of traditional and modern morphological research methods on a sufficient amount of material (100 specimens of the human brain (200 cerebral hemispheres), aged 21 to 95 years of both genders), new data on the morphometric features of the formations structure of the medial surface of the occipital lobe have been obtained, taking into account individual anatomical variability. For the first time, the dependence of the variability of the medial surface formations of the occipital lobe on the formations structure of the cerebral hemispheres, taking into account their morphometric parameters, has been identified. The morphometric characteristics of the sulci and gyri of the medial surface of the occipital lobe have been substantially supplemented based on a gender and a type of skull in adults. Priority is given in the thesis to determine the limit of size variation of the occipital lobe, sulci and gyri of its medial surface, considering a gender and a type of skull in adults. It was proved for the first time that the features of the morphometric parameters of the occipital lobe affect the morphometric features of the sulci and gyri of the medial surface of this occipital lobe. The morphometric asymmetry of the occipital lobes has been established and the structural features of their medial surface lumps in the left and right hemispheres of the brain have been revealed. The sources of blood supply to the medial surface formations of the occipital lobe have been specified. The features of the branching of the medial surface arteries of the occipital lobe have been established. The new data obtained in the study complement the current understanding of the individual anatomical variability of the medial surface of the occipital lobes. Data on the range of individual anatomical variability of the medial surface formations of the occipital lobes, their arteries can be used in a neurosurgical clinic. The data obtained can be used in neurophysiology in order to determine the physiological characteristics of cytoarchitectonic areas of the cortex with the medial surface of occipital lobes and to clarify their functional features; in neurology, in neuromorphology, in the pathoanatomical service, and in the forensic medical examination in order to identify pathological processes in the occipital lobes, detailing the areas of brain damage. Defined morphometric features of the sulci and gyri of the medial surface of the occipital lobes subject to a craniotype and a gender in a wide age range should be taken into account when conducting a tomographic study of the occipital lobes and endbrain as a whole. The results of the study significantly supplement the existing understanding of the patterns of blood supply to the occipital lobes with their medial surface, which is necessary when performing surgical interference on the cerebral hemispheres.