External considerations The routes of absorption include the following the skin, eyes, lungs, gastrointestinal tract ilIs or other routes depending on the organism 四大学化学学院 2002年7月26日 10四川大学化学学院 2002年7月26日 10 External considerations ◼ The routes of absorption include the following: ◼ the skin, ◼ eyes, ◼ lungs, ◼ gastrointestinal tract, ◼ gills or ◼ other routes depending on the organism