Chapter 4 Introduction

This chapter draws on concepts from the supplemental reading from Chapter Two of Drugs, Behavior, and Modern Society textbook (Levinthal, 2014) and several short videos for this unit.   The purpose of this chapter is to gain an understanding of how drugs work in the body. For this, we need to take a look at the brain, the nervous system, how drugs enter and exit the body, how drugs are metabolized, and how they affect physical and psychological reactions. You will also explore several websites and watch brief videos to deepen your understanding of these processes.