Final answer:
Mechanical barriers such as the skin, hair, and nose hairs are physical and mechanical devices that reduce the likelihood of occupational exposure to bloodborne pathogens. Healthcare workers can implement these barriers by wearing gloves, face protection, using disposable syringes and needles, and practicing good hand hygiene.
Step-by-step explanation:
Mechanical barriers are the physical and mechanical devices that reduce or eliminate the likelihood of occupational exposure to bloodborne pathogens. The skin, hair, and nose hairs are examples of mechanical barriers that block pathogens from entering the body. For healthcare workers, wearing gloves, face protection, using disposable syringes and needles, and practicing good hand hygiene are important mechanical barriers.