Being born and raised in New Orleans, I have seen my fair share of natural disasters. Of course, Katrina was the most devastating and the first one to have an impact on my life. At that point, I had not developed a bad drug habit.
He puts a needle to his arm and injects the heroin. It travels through his bloodstream and enters the brain. There the heroin converts to morphine, which binds to and activates mu-opioid receptors in the brain.