Which of the following components of the immune system is involved in both innate and adaptive immunity?
B cells
T cells
Macrophages
Natural killer cells
The Correct Answer is C
Explanation: Macrophages play a dual role in both innate and adaptive immunity. As part of the innate immune response, macrophages act as phagocytes, engulfing and destroying pathogens and debris in the body. They are also antigen-presenting cells, presenting processed antigens to other immune cells to initiate the adaptive immune response.
Incorrect choices:
a. B cells are part of the adaptive immune response and produce antibodies against specific antigens. They are not involved in the innate immune response.
b. T cells are primarily involved in the adaptive immune response and directly attack infected or abnormal cells. They are not part of the innate immune response.
d. Natural killer cells are part of the innate immune response and can directly kill infected or abnormal cells. They do not participate in the adaptive immune response.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Explanation: Rheumatoid arthritis is an autoimmune disorder in which the immune system mistakenly attacks the synovium (lining of the membranes that surround the joints), causing inflammation, pain, and joint damage.
Incorrect choices:
a. Allergic rhinitis is an allergic response to airborne allergens, such as pollen or pet dander, not an autoimmune disorder.
c. Celiac disease is an autoimmune disorder triggered by the ingestion of gluten, a protein found in wheat, barley, and rye, and it primarily affects the small intestine.
d. Type 1 diabetes mellitus is an autoimmune disorder in which the immune system attacks and destroys insulin-producing beta cells in the pancreas.
Correct Answer is B
Explanation
Explanation: Vaccinations are made from either weakened or killed pathogens or parts of pathogens, which cannot cause the disease they are meant to protect against. However, they stimulate the body's immune system to produce a protective response, providing immunity against the specific disease.
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