How Nicotine Gets Into the Body Humans have devised a number of ways of delivering nicotine to their bodies.
Nicotine moves right into the small blood vessels that line the tissues listed above.
From there, nicotine travels through your bloodstream to the brain and the rest of your body . Your lungs are lined by millions of alveoli , the tiny air sacs where gas exchange occurs. Once in your bloodstream, nicotine flows almost immediately to your brain. Within 10 to 15 seconds of inhaling, most smokers can feel nicotine's effects. Nicotine doesn't stick around your body for too long.