Cover Image
close this bookYour Health and Safety at Work: A Collection of Modules - Your Body at Work (ILO, 1996, 40 p.)
close this folderII. Routes of entry
View the document(introduction...)
View the documentA. Inhalation
View the documentB. Absorption
View the documentC. Ingestion


How do hazardous agents get into the body?

If you look at a diagram of the human body you can see that it is exposed to the outside world through a variety of surfaces. These include the skin, lungs, nose, mouth and the digestive, urinary, and genital tracts. Hazardous agents (e.g. chemicals and micro-organisms such as bacteria and viruses) can get into the body through any of these surfaces. The most common routes of entry are:

(a) through the lungs (inhalation)
(b) through the skin (absorption)
(c) through the mouth (ingestion).