Protective Breathing Devices Are Being Discussed

question 177

Multiple Choice

Protective breathing devices are being discussed. Technician A states that a person should use a disposable dust mask when grinding off rust or when working is dusty conditions. Technician B states that a person should use a respirator when painting. Who is correct?

• A) Technician A
• B) Technician B
• C) Both A and B
• D) Neither A nor B

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Definitions:

Smooth Muscle

Involuntary, non-striated muscle found in the walls of hollow organs like the intestines, blood vessels, and bladder, responsible for movements like constriction and relaxation.

Digestive Tract

A connected series of hollow organs forming a lengthy, winding path from the mouth to the anus, designed for ingesting food, digesting it, absorbing nutrients, and expelling waste.

Lamellae

Concentric, ring-like layers found in bone, making up the structure of compact bone, or in the chloroplasts of plants, where they contain light-absorbing pigments for photosynthesis.

Compact Bone Tissue

A type of bone tissue that is dense and solid, providing structural strength.