Explain how research on Parkinson’s Disease and Alzheimer’s disease has contributed to understanding the roles of the neurotransmitters dopamine and acetylcholine in brain function.

Much of scientists’ knowledge of the brain has been accumulated from studying brains that are not functioning normally. Explain how research on Parkinson’s Disease and Alzheimer’s disease has contributed to understanding the roles of the neurotransmitters dopamine and acetylcholine in brain function. Discuss the following: Discuss issues related to managing the symptoms of the disorders. What roles does acetylcholine play in the following nervous system functions? Parasympathetic nervous system activity Control of voluntary movement Learning and memory Sleep Revisiting the Question about Ethics There is no known cure for Parkinson’s or Alzheimer’s Diseases; however, experts believe that such stem-cell lines could be very valuable tools for studying these progressive debilitating diseases.