Toxicology

Question 1

What are the primary exposure pathways for humans?

Answer 1

Dermal absorption, inhalation, and ingestion.

Question 2

What is an additional exposure pathway for the human body (i.e. not primary)?

Answer 2

The eyes

Question 3

Which of the following diseases should be of special concern to an environmental engineer when designing, operating, or managing water supply projects?

Answer 3

1. Legionnaires’ disease
2. Hepatitis A

Question 4

What diseases could workers maintaining water systems be exposed to?

Answer 4

1. Legionnaires’ disease

Question 5

What diseases could sewage collection and treatment workers be exposed to?

Answer 5

1. Enteric bacteria
2. Hepatitis A virus
3. Infectious bacteria
4. Parasitic protozoa (Giardia)
5. Allergenic fungi

Question 6

What type of microorganisms could solid waste handling and disposal facility workers be exposed to?

Answer 6

Blood-borne pathogens from infectious wastes.

Question 7

What does the OSHA Respiratory Protection Standard state?

Answer 7

It defines any atmosphere that contains less than 19.5% oxygen as being oxygen deficient.