Why Do Cigarette Smokers Cough More Than Most People Do

question 40

Multiple Choice

Why do cigarette smokers cough more than most people do?

• A) The tar in cigarette smoke tends to make alveoli stick closed. Coughing opens them.
• B) Coughing is the respiratory system's attempt to clear itself of the toxins found in smoke.
• C) Cigarette smoking partially paralyzes the lungs; coughing exchanges the resultant "dead air."
• D) Coughing stimulates blood flow to the lungs.

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Definitions:

Factor

An element or constituent that contributes to a result or outcome.

Population Means

The average value of a characteristic in a population, and a parameter that is often estimated from sample data.

ANOVA

Analysis of Variance, a statistical method used to compare means of three or more samples, testing the hypothesis that all samples are taken from populations with the same mean.

Equal Variances

A statistical assumption that the variances of the items being compared are the same across all levels or groups.