Physical and Chemical Barriers That Form the First Line of Innate

question 30

Multiple Choice

Physical and chemical barriers that form the first line of innate defense include

• A) the acidity of the stomach.
• B) tear fluid from the eye.
• C) an un-punctured skin.
• D) mucus and cilia of the respiratory tract.
• E) All answers are correct.

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Definitions:

Toxic Substances Control Act

A U.S. law, enacted in 1976, aimed at regulating the introduction of new or already existing chemicals.

Federal Insecticide, Fungicide, and Rodenticide Act

A United States federal law passed in 1947 that provides federal control of pesticide distribution, sale, and use.

Clean Water Act

A U.S. federal law aimed at regulating the discharge of pollutants into the nation's surface waters, including lakes, rivers, streams, and coastal areas.

Federal Government

The national government of a federation, which holds the authority to govern the entire country, distinct from state or local governments within the federation.