What is the process called when a pesticide enters the bloodstream after crossing internal barriers?
Answer
Absorption
Once a pesticide successfully navigates past the body's initial barriers—whether that barrier is the skin (dermal route), the lung tissue (inhalation route), or the gastrointestinal lining (ingestion route)—the next critical internal step is its entry into the general circulation. This process of gaining entry into the blood is precisely defined as absorption. Following absorption, the chemical is then distributed throughout the body's various tissues and organs. Absorption itself is distinct from the body's subsequent attempts to neutralize the chemical (metabolism, primarily in the liver) or the final removal of the substance or its byproducts from the system (excretion, via kidneys or bile).
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