Illinois Pesticide Applicator Practice Test

Dermal exposure occurs when a chemical comes into contact with the skin. In the scenario where a chemical blows onto an operator's chest, the chemical physically interacts with the skin surface, which is characteristic of dermal exposure. This type of exposure can be particularly concerning because the skin can absorb certain chemicals, potentially leading to systemic effects, depending on the properties of the chemical involved.

Inhalation exposure refers to the breathing in of vapors or aerosols into the lungs, while oral exposure involves ingestion of substances through the mouth. Ambient exposure denotes the general presence of a pesticide in the environment, which might not affect a specific individual directly but could lead to exposure through various routes over time.