Two most common routes for lead to enter the body?

Two most common routes for lead to enter the body?

• A. Dermal contact and ingestion
• B. Inhalation and dermal contact
• C. Ingestion and inhalation
• D. Injection and ingestion

Answer: (C)

Lead most readily enters the body through ingestion and inhalation. Ingestion happens when lead-contaminated dust or paint chips are swallowed or when hands or objects contaminated with lead are put in the mouth—this is especially common with children and in homes with lead-based paint. Inhalation occurs when lead-containing dust or fumes become airborne and are breathed in, such as during sanding, grinding, welding, or burning lead-containing materials or in certain occupational settings. Once swallowed or inhaled, lead can enter the bloodstream and affect multiple organ systems. Dermal exposure contributes very little to lead intake under normal conditions, so it isn’t a major route compared to ingestion and inhalation, and injections are not a typical exposure route in ordinary environments.

Lead most readily enters the body through ingestion and inhalation. Ingestion happens when lead-contaminated dust or paint chips are swallowed or when hands or objects contaminated with lead are put in the mouth—this is especially common with children and in homes with lead-based paint. Inhalation occurs when lead-containing dust or fumes become airborne and are breathed in, such as during sanding, grinding, welding, or burning lead-containing materials or in certain occupational settings. Once swallowed or inhaled, lead can enter the bloodstream and affect multiple organ systems. Dermal exposure contributes very little to lead intake under normal conditions, so it isn’t a major route compared to ingestion and inhalation, and injections are not a typical exposure route in ordinary environments.