Anatomy, Physiology and Routes of Entry
ASP written lesson, 12 min read. ASP Domain 6: Industrial Hygiene and Occupational Health
Written with AI help from the rules it covers, then fact-checked against them. Study aid, not site-specific safety advice. The official rule controls.
What you'll learn
- Describe the respiratory system and why particle size controls where dust lands
- Explain how skin, the gut and injection let chemicals into the body
- Define absorption, distribution, metabolism and excretion, and target organ
- Match each route of entry to the controls that block it
What this lesson covers
This lesson explains the body systems that matter most in occupational exposure, and the four routes by which hazardous substances get in: inhalation, skin contact or absorption, ingestion and injection. It matters because choosing the right sampling method and the right control depends on knowing how a contaminant enters and where it does harm.
This lesson is included with a pass
Written lessons come with every ASP pass, along with the video lessons, the question bank, mocks and the tutor. $80 per exam for 6 months, or $143 for all three for 12 months.
Try the free industrial hygiene fundamentals: anatomy and routes of entry practice questions