Mercury is a toxic substance, and the hazards of mercury-associated occupational and accidental exposures are well known. What is the primary source of mercury poisoning today?

Fish such as tuna and swordfish

Hypertrophy may occur as the result of normal physiologic or abnormal pathologic conditions. The increase in muscle mass associated with exercise is an example of physiologic hypertrophy. Pathologic hypertrophy occurs as the result of disease conditions and may be adaptive or compensatory. Examples of adaptive hypertrophy are the thickening of the urinary bladder from long-continued obstruction of urinary outflow and the myocardial hypertrophy that results from valvular heart disease or hypertension. What is compensatory hypertrophy?

When one kidney is removed, the remaining kidney enlarges to compensate for the loss

The nurse is treating a client who has been immobilized for several months. As a result, he is experiencing bone thinning and weakening. The nurse is aware of the risk of lung, blood vessel, and renal tubule calcification due to:

metastatic calcification

A 70-year-old client is being treated for a recent ischemic stroke that has left the client with deficits. These deficits likely result from which mechanism of cell injury?

hypoxia and adenosine triphosphate (ATP) depletion

A client has experienced significant decreases in mobility and stamina during a 3-week hospital stay for the treatment of a femoral head fracture. Which phenomena most likely accounts for the client's decrease in muscle function?

Disuse atrophy of muscle cells during a prolonged period of immobility

A client has developed cell atrophy. The most likely cause would be:

ischemia.

A client is admitted with an alteration in arterial blood gases. Cellular injury is most likely to result from which aspect of this abnormality?

Hypoxia

Parents of a 4-year-old child discovered the child has been chewing and swallowing imported toy figurines that have tested positive for lead. Which blood test should the care team prioritize?

Red blood cell (RBC) levels

The nurse is conducting a physical assessment of a homeless man during a night when the wind chill factor is -10°F (-23°C). When assessing the man's fingers and toes for frostbite, the nurse looks for which type of cellular injury?

Hypoxic

A nurse is teaching a class on health promotion and includes information about the risk from ultraviolet radiation. Which concepts should be included in this class?

Ultraviolet radiation increases the risk of skin cancer and damages DNA.