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

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Test your knowledge on preventing occupational and environmental diseases with our quiz app. Dive into insightful questions based on the 6th edition of the renowned book Occupational and Environmental Health: Recognizing and Preventing Disease and Injury by Levy et al., ISBN 978-0-19-539788-8. A perfect tool for health professionals and students.

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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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