Occupational and Environmental Health: Recognizing and Preventing Disease and Injury - Multiple Choice Questions - Learn & Prevent

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Prepare for the Occupational and Environmental Health exam with our multiple-choice questions designed to help you recognize and prevent disease and injury. Study effectively and gain confidence for your upcoming test!

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How does the skin primarily prevent toxic substances from entering the body?

  1. By secreting protective oils

  2. By maintaining a high pH

  3. By acting as a physical barrier

  4. By metabolizing chemicals on contact

The correct answer is: By acting as a physical barrier

The skin stands as the first line of defense against harmful substances found in the environment. It forms a protective barrier around our body, keeping out potential toxins like bacteria, chemicals, and dirt. While the skin does secrete oils that also provide protection, this is not its primary role. Maintaining a high pH and metabolizing chemicals on contact are also not functions of the skin and do not contribute to preventing toxic substances from entering the body.

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