Texas Pesticide Applicator Practice Exam

Through which routes of entry are you likely to be exposed during pesticide poisoning?

1. Ingestion and injection

2. Inhalation and dermal

3. Oral and skin contact

4. Only through inhalation

The correct answer is: Inhalation and dermal

Pesticide poisoning can occur through multiple routes of entry, with inhalation and dermal absorption being the most significant. When pesticides are applied, they can become airborne as aerosols or vapors, which can easily be inhaled, particularly if the application method involves spraying. Additionally, many pesticides can penetrate the skin and be absorbed into the bloodstream, making dermal exposure a critical concern for anyone applying or coming into contact with these substances. Inhalation is particularly hazardous because it allows for rapid absorption into the respiratory system and subsequently into the bloodstream, potentially leading to acute toxicity. Dermal exposure poses similar risks, especially if proper protective equipment is not used or if the skin is inadvertently exposed to pesticide residues. Other routes, such as ingestion or injection, while possible, are less common in typical pesticide exposure scenarios. Ingestion may occur if contaminated hands or food items are consumed, and injection could be a concern with improperly handled pressurized containers. However, inhalation and skin contact remain the primary pathways for pesticide exposure and poisoning in practical applications.