Week 6, Quiz 4, Chapter 5&6

What are agents?

Any substances, chemical, biological, or physical, to which a human may be exposed at work or at home

Which of the following is an important fact about physical agents in the workplace? a. Physical agents are present in unexpected places. b. Exposure to most physical agents may be inherent in the workplace. c. Legislative standards are maximum tolerances. d. Issues are somewhat complex and solutions have to be evaluated for the risks they introduce to the environment.

Physical agents are present in unexpected places

What is one of the factors to consider when deciding on the most effective hearing protections? a. Hearing protection does not need to be replaced. b. Employers must consider a supervisor's need. c. Each employee should be fitted with hearing protectors. d. Selection criteria for hearing protection include worker's hearing ability, communication demands, comfort, physical constraints of the job, and individual daily noise exposure.

Selection criteria for hearing protection include worker's hearing ability, communication demands, comfort, physical constraints of the job, and individual daily noise exposure.

Which of the following may be produced by chemicals that are NOT rapidly absorbed through the skin? a. an acute toxic effect b. airborne contaminants c. interactions between various chemicals and biological groups d. a localized irritation such as dermatitis, which may cause the skin to become white and dry

a localized irritation such as dermatitis, which may cause the skin to become white and dry

Which of the following is included in best practices for controlling vibration? a. Using equipment that produces higher vibrations. b. Adding dampening devices. c. Increasing worker exposure time. d. Avoiding the source by handling the task.

adding dampening devices

Akanksha is a dental hygienist who cleans patient's teeth for 35 hours a week. What is the most realistic way of minimizing segmental vibration from the electric polishing brush?

adding padding to the handle of the brush

The safe use and handling of chemical agents can be ensured through the active employment of certain control measures. Which of the following is NOT one of those measures? a. engineering controls b. good housekeeping c. medical surveillance d. biosafety levels

biosafety levels

What are sensitizers?

chemical or biological agents that cause the body's immune system to respond abnormally by producing antibodies

The Globally Harmonized System is a system that would establish consistency around in world in terms of what?

classification and labelling of chemical products

What two basic types of physiological damage can create hearing loss?

conductive and sensorineural

Which of the following is NOT a basic level of protection within the respiratory tract? a. nose b. nasal passage c. alveoli d. dermatitis

dermatitis

Which of the following would be used by a human resources manager to implement a hearing conservation program? a. education and training b. random hearing tests c. monthly program review d. noise assessment

education and training

What three characteristics is the human hearing response conditional on?

frequency, duration, and loudness

According to your textbook, what are chemical agents? a. hazards created by one or more chemicals b. hazards created by exposure to biological material c. diseases such as asbestosis and silicosis d. spills and burns related to various exposures

hazards created by one or more chemicals

Which of the following is a cold-related illness? a. athlete's foot b. nosebleeds c. hypothermia d. headaches

hypothermia

Long-distance truck drivers could be subject to what whole-body vibration related problem as a result of sitting over or near the engine for long periods of time?

impaired vision

Which one of the following statements about thermodynamic theory is the LEAST true? a. Temperature flows from the high point to the low point. b. In hot climates, moderate heat will flow from the body. c. In cold climates, heat will flow from the body. d. In hot climates, heat will be absorbed by the body.

in hot climates, moderate heat will flow from the body

According to the Canadian Centre for Occupational Health and Safety, when might a workplace be too noisy?

in the workplace, employees have to raise their voices to be understood.

Which of the following LEAST describes the general characteristics that make solvents both effective and hazardous? a. high vapour pressure—this can create an inhalation hazard b. low boiling point—the lower the boiling point, the greater the risk of vapours in the air c. low surface tension—the higher the wetting factor, the more the chemical will be absorbed into the skin d. low volatility—the less the chemical evaporation, the less the risk to health

low volatility- the less the chemical evaporation the less the risk to health

Rick is the supervisor of a road crew working on highway resurfacing. What administrative control would help his workers acclimatize to working in the heat?

mandator water breaks

Which of the following statement(s) BEST describes the concerns with ingestion of solvents? a. Many solvents may enter through the mouth and digestive system. b. Once ingested, solvents may not be absorbed into the bloodstream and carried to "target" organs. c. Chemicals ingested are a critical hazard as chemicals enter through the skin or lungs. d. Personal hygiene cannot contribute to poisoning.

many solvents may enter through the mouth and digestive system

Besides record keeping, what control measure ensures that baseline tests will be available when needed?

medical surveillance

Which of the following illnesses is linked to asbestos exposure? a. mesothelioma b. dermatitis c. chemical pneumonitis d. HIV (human immunodeficiency virus)

mesothelioma

Most of the human exposure to chemicals comes from breathing airborne contaminants. According to your textbook, which one of the following is NOT considered a level of defense for inhalation? a. nose b. mouth c. interior of the nasal passage d. tiny hairs or cilia and mucus

mouth

Which one of the following physical factors does have an effect on thermal stress adaptability? a. sex b. work experience c. physical fitness d. poor attitude

physical fitness

Which one of the following is part of controlling non-ionizing radiation exposures? a. exposure b. ultra-violet c. protective equipment d. extensive specialized training

protective equipment

The manager has certain responsibilities when dealing with HIV-positive employees or other employees with biological illnesses. Which of the following is NOT one of those responsibilities? a. Maintain the privacy of the individual. b. Outline employment obligations. c. Provide or refer to medical support. d. Provide information and education to all employees about all employee biological illnesses.

provide information and education to all employees about all employee biological illnesses

Which one of the following is a physical agent?

radiation

By which four routes can chemicals enter the body?

respiration, skin absorption, skin penetration, and ingestion

Inhalation is the most common and hazardous route of entry. What is the most commonly used protection device?

respirator

The safe use and handling of chemical and biological agents can be ensured through the active usage of all of the following control measures EXCEPT?

risk tolerance assessment

Rob's doctor has told him that his alveoli are seriously damaged. In what shape are his cilia likely to be?

severely damaged

Many toxic materials are dangerous on their own but some also have synergistic effects. What is the definition of "synergistic effect"?

two factors taken together that are greater than the sum of the two

HRMs can implement which of the following practices and procedures to reduce the risk of biological infection in the workplace?

use of personal protective equipment, education and training

Which one of the following statements about noise and hearing is the LEAST true? a. We hear all sounds levels. b. The human hearing range of frequencies is approximately 20 Hz to 20,000 Hz. c. The standard for the measurement of noise is the unit called the decibel. d. The human hearing response is conditional on frequency, duration, and loudness.

we hear all sound levels