Absorption is the process by which toxicants enter the body. There are several pathways through which toxicants can be absorbed, including ingestion, inhalation, dermal contact, and injection. The route of exposure significantly influences the absorption rate and the subsequent distribution of the toxicant within the body. For instance, inhaled toxicants are rapidly absorbed through the lung tissues and enter the bloodstream quickly, while ingested toxicants pass through the digestive system before absorption.
