Chapter 2

1. The level of toxicity at which the concentration of an ingested, absorbed, or injected substance results in death among 50% of the test population is known as the:

2. Which of the following is NOT considered a common method of exposure?

3. What is the term for the 15-minute, time-weighted average exposure that should not be exceeded at any one time, nor be repeated more than 4 times daily with a 60-minute rest period between each exposure?

4. 26. What is the term for the maximum concentration that should not be exceeded, even instantaneously?

5. What is the term for the maximum airborne concentration of a material to which an average healthy person may be exposed repeatedly for 8 hours each day, 40 hours a week, without suffering irreversible effects?

6. Infrared waves, radio waves, and visible light are all examples of _______ radiation, which is also characterized by its lack of energy to remove electrons from atoms.

7. The term for a systemic poison that attacks the blood system is:

8. What can happen to the human body when exposed to dose rates that reach and exceed the threshold levels?

9. The term for a systemic poison that causes genetic damage to cells or organisms is:

10. What is the term for an atmospheric concentration of any toxic, corrosive, or asphyxiant substance that poses an immediate threat to life, or would cause irreversible or delayed adverse health effects?

11. Of the four types of radiation, which can travel several yards in air and penetrate paper and human skin?

12. Exposure to various types and doses of hazardous materials over a period of years is associated with:

13. Inhalation of corrosive gases causing burns or acute swelling to the upper respiratory tract is a result of which category of harm to the human body?

14. Which of the following best describes exposure to a single dose of highly toxic chemicals during emergency response?

15. Which route of exposure can be enhanced due to abrasions, cuts, heat, and moisture, and can have varying rates of exposure depending on the body parts exposed?

16. A ______ effect occurs when a chemical enters the bloodstream and attacks internal areas of the human body.

17. Which type of exposure would result from needlestick punctures or injection of high-pressure gases and liquids into the body?

18. Routes of exposure are a prime way for hazardous materials to enter the body and cause harm. The route of exposure that is most common and dangerous is:

19. Harm to the human body that results from direct contact with fragments from a blast or container is known as:

20. The level of toxicity at which the concentration of an inhaled substance results in death among 50% of the test population is known as the:

21. The term for a systemic poison that attacks the central nervous system is:

22. The human body’s response to a chemical may be influenced by four factors. Which of the following is NOT one of those factors?

23. Low exposures to hazardous chemicals, repeated multiple times over many years, would best describe what type of exposure?

24. A responder is exhibiting signs and symptoms of exposure as she is resting in rehab after performing control functions at a hazardous materials incident. Which of the following best describes this situation?

25. Prohibiting personnel from drinking, eating, or smoking except in designated areas, such as rehab, after decontamination will prevent exposure through:

26. Which type of harm to the human body involves exposure to either hot or cold temperatures?

27. There are three basic atmospheres at an incident involving hazardous materials. Which of the following is NOT one of them?

28. Which method of exposure allows hazardous materials such as corrosives to immediately damage skin or body tissue on contact?

29. _____ is defined as the ability of a substance to cause injury to biological organisms.

30. Which of the following refers to direct contact with a chemical through skin absorption?