A staff member asks a nurse to describe foam cells. The nurse's best response is that foam cells are
lipid-laden mast cells that have a soap-like texture.
macrophages that engulf low-density lipoproteins (LDLs).
injured neutrophil clots.
deposited adipose cells.
The Correct Answer is B
Choice A reason: Lipid-laden mast cells are not foam cells. Mast cells are immune cells that release histamine and other inflammatory mediators. They do not accumulate lipids or have a soap-like texture.
Choice B reason: Macrophages that engulf low-density lipoproteins (LDLs) are foam cells. They are part of the atherosclerotic process that leads to plaque formation in the blood vessels. They are called foam cells because they have a foamy appearance under the microscope.
Choice C reason: Injured neutrophil clots are not foam cells. Neutrophils are immune cells that fight infection and form pus. They do not engulf LDLs or contribute to atherosclerosis.
Choice D reason: Deposited adipose cells are not foam cells. Adipose cells are fat cells that store energy and secrete hormones. They do not phagocytose LDLs or form plaques in the blood vessels.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A reason: This is not a sign of left-sided heart failure. Jugular vein distension is a sign of right-sided heart failure, which occurs when the right ventricle fails to pump blood effectively to the lungs.
Choice B reason: This is not a sign of left-sided heart failure. Increased blood pressure is a risk factor for developing heart failure, but it does not indicate the severity or location of the heart failure.
Choice C reason: This is not a sign of left-sided heart failure. Hepatomegaly is a sign of right-sided heart failure, which occurs when the right ventricle fails to pump blood effectively to the systemic circulation.
Choice D reason: This is a sign of left-sided heart failure. Decreased urine output is a result of reduced renal perfusion, which occurs when the left ventricle fails to pump blood effectively to the aorta and the rest of the body.
Correct Answer is D
Explanation
Choice A reason: Potassium is not restricted in the management of high blood pressure. In fact, potassium can help lower blood pressure by balancing the effects of sodium and relaxing the blood vessel walls.
Choice B reason: Magnesium is not restricted in the management of high blood pressure. Magnesium can also help lower blood pressure by regulating the calcium channels and improving the endothelial function.
Choice C reason: Calcium is not restricted in the management of high blood pressure. Calcium can also help lower blood pressure by inhibiting the renin-angiotensin system and reducing the vascular resistance.
Choice D reason: Sodium is restricted in the management of high blood pressure. Sodium can increase blood pressure by retaining water in the body and increasing the blood volume and pressure.
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