In toxicology, there are several types of exposure doses to consider:
External Dose: The amount of a chemical present in the environment that an organism is exposed to. Internal Dose: The amount of a chemical that actually enters the body and is available for interaction with biological targets. Absorbed Dose: The fraction of the external dose that is absorbed by the organism. Effective Dose: The portion of the absorbed dose that reaches the target tissue or organ and causes a biological effect.
