Lead exposure via inhalation occurs by which mechanism?

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Multiple Choice

Lead exposure via inhalation occurs by which mechanism?

Inhalation exposure means lead enters the body when you breathe air that contains lead particles or fumes. This route is especially important for small dust particles generated during activities like sanding or scraping lead-based paint, or during burning of materials that release lead fumes. Particles in the respirable range can reach deep into the lungs and be absorbed into the bloodstream quickly, making inhalation a significant pathway for lead poisoning. In contrast, ingestion involves swallowing lead-contaminated dust or paint chips and is absorbed through the digestive tract, with factors like age and nutrition affecting how much is absorbed. Dermal (skin) absorption of lead is minimal, so it’s not a major route of exposure. Breathing in lead dust particles is the mechanism described here.

Inhalation exposure means lead enters the body when you breathe air that contains lead particles or fumes. This route is especially important for small dust particles generated during activities like sanding or scraping lead-based paint, or during burning of materials that release lead fumes. Particles in the respirable range can reach deep into the lungs and be absorbed into the bloodstream quickly, making inhalation a significant pathway for lead poisoning.

In contrast, ingestion involves swallowing lead-contaminated dust or paint chips and is absorbed through the digestive tract, with factors like age and nutrition affecting how much is absorbed. Dermal (skin) absorption of lead is minimal, so it’s not a major route of exposure. Breathing in lead dust particles is the mechanism described here.

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