Anthropology is the study of various aspects of humans within past and present societies. Social anthropology and cultural anthropology study the norms and values of societies. Linguistic anthropology studies how language affects social life. Biological or physical anthropology studies the biological development of humans. Archaeology, which studies past human cultures through investigation of physical evidence, is thought of as a branch of anthropology in the United States, while in Europe, it
See also: Cerebral arteriovenous malformation. Arteriovenous malformation (AVM) is an abnormal connection between arteries and veins, bypassing the capillary system. This vascular anomaly is widely known because of its occurrence in the central nervous system (usually cerebral AVM), but can appear in any location.
When an arteriovenous malformation (AVM) occurs, a tangle of blood vessels in the brain or on its surface bypasses normal brain tissue and directly diverts blood from the arteries to the veins.ymptoms may vary depending on where the AVM is located: More than 50 percent of patients with an AVM have an intracranial hemorrhage. Among AVM patients, 20 percent to 25 percent have focal or generalized seizures. Patients may have localized pain in the head due to increased blood flow around an AVM.