Ingestion exposure occurs through which route?

Ingestion exposure occurs through which route?

• A. Through the lungs
• B. Through the skin
• C. Through the mouth or gastrointestinal tract
• D. Through the nose

Answer: (C)

Ingestion exposure is the route where a chemical enters the body through the mouth and then travels through the gastrointestinal tract. This is distinct from inhalation, which involves the lungs (and the nose as part of the breathing route), and from dermal exposure, which goes through the skin. Because ingestion specifically involves swallowing or mouth-to-GI tract entry, it best matches the route described as entering via the mouth or gastrointestinal tract. It often occurs when contaminated hands or contaminated food or drinks are ingested, so good hygiene and avoiding eating or drinking in contaminated areas are key controls.

Ingestion exposure is the route where a chemical enters the body through the mouth and then travels through the gastrointestinal tract. This is distinct from inhalation, which involves the lungs (and the nose as part of the breathing route), and from dermal exposure, which goes through the skin. Because ingestion specifically involves swallowing or mouth-to-GI tract entry, it best matches the route described as entering via the mouth or gastrointestinal tract. It often occurs when contaminated hands or contaminated food or drinks are ingested, so good hygiene and avoiding eating or drinking in contaminated areas are key controls.