<prompt> Pathology of Alzeheimers disease is:Deficiency of cholinergic actionExcess action of dopamineAccumulation of beta-amyloid proteinNone of the above  <response>: Ans. C: Accumulation of beta-amyloid protein Alzheimers disease AD is a slowly progressive disease of the brain that is characterized by impairment of memory and eventually by disturbances in reasoning, planning, language, and perception. Many scientists believe that Alzheimers disease results from an increase in the production or accumulation of a specific protein beta-amyloid protein in the brain that leads to nerve cell death. 