Smokeless Tobacco __________

question 51

Multiple Choice

Smokeless tobacco __________.

• A)is a safe alternative to cigarette smoking
• B)increases the risk for emphysema
• C)increases the risk of cancer
• D)increases the risk for chronic bronchitis

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Definitions:

Nicotine

A stimulating and addictive substance found in tobacco products.

Agonist

A chemical or drug that binds to receptors in the brain and causes a reaction similar to that of a naturally occurring neurotransmitter.

Excitatory Signal

A type of neurotransmitter-induced signal in the nervous system that increases the likelihood of a neuron firing an action potential.

Action Potential

A sudden increase and subsequent decrease in the voltage across a cell membrane resulting from the movement of charged particles.