Any topic (writer’s choice)

After reading Chapter 1 in Psychopharmacology (Meyer & Quenzer, 2018) discuss  also please numbers (1, 2, 3) to organize essay
1) What is the placebo effect? How might it be used clinically and in research?
2) What is the bloodbrain barrier, and why is it important to psychopharmacology?
3) Reflect on the complexity of how our bodies were created to function- what is a protective aspect of the blood-brain barrier?