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Your brain is made up of billions of nerve cells. They communicate by releasing chemical messengers called neurotransmitters. Each neurotransmitter is like a key that fits into a special "lock," called a receptor, located on the surface of nerve cells. When a neurotransmitter finds its receptor, it activates the receptor's nerve cell. The nicotine molecule is shaped like a neurotransmitter called acetylcholine. Acetylcholine and its receptors are involved in many functions, including muscle movement, breathing, heart rate, learning, and memory. They also cause the release of other neurotransmitters and hormones that affect your mood, appetite, memory, and more. When nicotine gets into the brain, it attaches to acetylcholine receptors and mimics the actions of acetylcholine. Nicotine also activates areas of the brain that are involved in producing feelings of pleasure and reward. Recently, scientists discovered that nicotine raises the levels of a neurotransmitter called dopamine in the parts of the brain that produce feelings of pleasure and reward. Dopamine, which is sometimes called the pleasure molecule, is the same neurotransmitter that is involved in addictions to other drugs such as cocaine and heroin. Researchers now believe that this change in dopamine may play a key role in all addictions. This may help explain why it is so hard for people to stop smoking. For the source and more detailed information concerning this subject, click on the related links section (NIDA) indicated below.

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Related Questions

What body systems do nicotine effect?

Nicotine is an extremely addictive drug. When smoking, nicotine enters the bloodstream and goes straight to the brain. The brain is the body system that nicotine effects


Is nicotine a depressent?

No. Nicotine is the opposite of a depressant, it is classified as a stimulant.


What is in cigarettes that is so addicting?

An ingredient called nicotine is what is so addicting. Nicotine travels from the lungs, into the bloodstream, and directly to the brain from there, and nicotine causes the brain to demand more of the nicotine, causing the addiction in cigarettes.


Can nicotine pass through the blood brain barrier?

Yes, nicotine is able to pass through the blood-brain barrier, which is why it can have effects on the brain and central nervous system. This property contributes to the addictive nature of nicotine.


Does nicotine affect your brain?

yes


What best describes the effect nicotine has on the central nervous system?

Nicotine stimulates the release of various neurotransmitters in the brain, particularly dopamine, which leads to feelings of pleasure and reward. It can also increase heart rate and blood pressure, as well as improve concentration and focus. Long-term nicotine use can lead to addiction and changes in brain chemistry.


How does nicotine arrive at the brain?

In the bloodstream, from the lungs


What does it mean if your brain is black?

Nicotine poisoning.


What effect can such nicotine toxic chemicals have on the body?

Nicotine itself is not especially bad for you, but the other chemicals that go along with smoking AND smokeless tobacco are deadly.


How smoking effects the brain?

it affects the brain because the nicotine the chemical that is in the smoke, goes to your brain


Why is nicotine addictive and how does it affect the brain and body?

Nicotine is addictive because it activates the brain's reward system, leading to feelings of pleasure and reinforcement. When nicotine enters the body, it binds to nicotine receptors in the brain, releasing dopamine and other neurotransmitters that create a sense of pleasure and reward. Over time, the brain becomes dependent on nicotine to maintain these feelings, leading to addiction. Nicotine also affects the body by increasing heart rate, constricting blood vessels, and raising blood pressure, which can have negative effects on overall health.


What is a nicotine buzz?

Nicotine mimics acetylcholine in the brain producing a very short term euphoric feeling.