New York State Asbestos Investigator Practice Exam

What is the main route of exposure to asbestos?

1. Ingestion

2. Inhalation

3. Absorption through skin

4. Injection

The correct answer is: Inhalation

The primary route of exposure to asbestos is through inhalation. Asbestos fibers are microscopic and can be easily airborne, especially during activities such as construction, renovation, or demolition of structures that contain asbestos-containing materials. When these materials are disturbed, tiny fibers can become airborne and be inhaled into the lungs, where they can cause serious health issues, including asbestosis, lung cancer, and mesothelioma. Inhalation is the most significant concern because these airborne fibers can remain suspended in the air for long periods, making them easily accessible to individuals in the vicinity. The other proposed routes, including ingestion, absorption through the skin, and injection, are less relevant in terms of asbestos exposure. Ingestion of asbestos fibers can occur but is much less common and typically has a lower associated risk compared to inhalation. Absorption through the skin is not a significant exposure route because asbestos fibers do not penetrate the skin effectively. Injection of asbestos is not a recognized route of exposure in occupational or environmental contexts. Understanding the primary route of asbestos exposure emphasizes the importance of safety measures to limit inhalation during asbestos abatement and management activities.