How it Works
Try Naxlex NCLEX-RN (Free-Trial)

Which of the following components of the immune system is involved in both innate and adaptive immunity?

A.

B cells

B.

T cells

C.

Macrophages

D.

Natural killer cells

Answer and Explanation

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.


Get 100+ Naxlex Exit Exams for $79 Try Naxlex NCLEX-RN (14 Day Free-Trial)

Naxlex Comprehensive Predictor Exams

Free Nursing Study Resources

Related Questions

Correct Answer is B

Explanation

Explanation: Passive immunity is acquired when preformed antibodies are transferred to an individual, providing immediate but temporary protection against a specific pathogen. This can occur naturally from a mother to her newborn or artificially through administration of specific antibodies.

Incorrect choices:

a. Active immunity is acquired when the body's immune system is exposed to a pathogen and produces an immune response to provide protection against future infections.

c. Natural immunity refers to immunity that is acquired through natural exposure to a pathogen, either through infection or vaccination.

d. Herd immunity is the indirect protection that occurs when a large percentage of a population becomes immune to a disease, either through vaccination or previous infection, reducing the likelihood of transmission to susceptible individuals.

Correct Answer is A

Explanation

Explanation:Destroying infected cells. Antibodies are produced by B cells in response to a specific pathogen and play a crucial role in identifying and neutralizing the invading pathogens, including infected cells.

Incorrect choices:

b. Attracting white blood cells to the site of infection is not the primary role of antibodies. White blood cells are attracted to the site of infection by chemical signals released by damaged tissues or pathogens.

c. Antibodies do not produce hormones. Hormones are chemical messengers produced by endocrine glands to regulate various bodily functions.

d. Antibodies do not regulate body temperature. Body temperature regulation is mainly controlled by the hypothalamus in the brain.

Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.

Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today

Register