exposure route

An exposure route is the way a substance, such as a chemical or pollutant, enters the body. Common routes include inhalation (breathing in), ingestion (swallowing), skin contact, and injection (through punctures or needles). Understanding the exposure route helps determine potential health risks and guides safety measures. For example, inhaling fumes affects the respiratory system, while skin contact might cause irritation or absorption into the bloodstream. Recognizing how exposure occurs is essential for assessing the likelihood and severity of health effects from environmental or occupational hazards.