1. Describe the blood brain barrier2. Describe the pathophysiology of parkinson’s disease3. Describe the mechanism of action of the dopaminergic medications to treat parkinson’s. How do these medications reduce symptoms? Is there a cure for parkinson’s4. Describe the pathophysiology of Alzheimer’s Disease5. Describe the mechanism of action of the drugs for cognitive impairment (page 193). How do these medications achieve a therapeutic effect in Alzheimer’s disease.6. Describe the pathophysiology of multiple sclerosis7. Describe the mechanism of action of the disease modifying drugs used to treat MS8. Discuss 3 major nursing implications to medication used to treat MS and how these would be attended to9. Describe the 5 ways in which antiepileptic drugs (AEDs) work to reduce seizures10. Discuss two teaching points for a patient that is starting phenytoin11. How do centrally acting muscle relaxants work to relieve spasticity?NOTE: Please kindly cite all answers.