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

Which white blood cell type is primarily involved in allergic reactions?

A.

Monocytes

B.

Basophils

C.

Neutrophils

D.

Eosinophils

Answer and Explanation

The Correct Answer is B

A. Monocytes: Monocytes become macrophages and dendritic cells involved in phagocytosis and antigen presentation; they are not the primary mediators of allergic immediate hypersensitivity.
B. Basophils: Basophils (and tissue mast cells) contain histamine and other mediators and participate in allergic reactions and immediate hypersensitivity responses.
C. Neutrophils: Neutrophils are key phagocytes in bacterial infection and acute inflammation but are not the principal cells driving classic allergic responses.
D. Eosinophils: Eosinophils are involved in parasitic infections and contribute to allergic inflammation (especially in asthma and allergic rhinitis), but basophils and mast cells are central to immediate allergic reactions.


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 C

Explanation

A. To increase blood glucose levels directly:The hypothalamus does not directly raise blood glucose; it regulates hormones that influence this process indirectly via other glands.
B. To store and release oxytocin:Oxytocin is stored and released by the posterior pituitary, not the hypothalamus itself.
C. To secrete corticotropin-releasing hormone (CRH):The hypothalamus produces and releases CRH, which stimulates the anterior pituitary to secrete ACTH, initiating the HPA axis cascade leading to cortisol release.
D. To produce aldosterone:Aldosterone is a mineralocorticoid hormone produced by the adrenal cortex, not by the hypothalamus.

Correct Answer is A

Explanation

A. B cells:B cells, upon activation, differentiate into plasma cells that synthesize and secrete antibodies that target specific antigens.
B. Macrophages:Macrophages perform phagocytosis and antigen presentation to T cells but do not produce antibodies.
C. T helper cells:T helper cells coordinate the immune response by stimulating B cells and cytotoxic T cells but are not antibody-producing cells themselves.
D. Neutrophils:Neutrophils are first responders in inflammation and bacterial infection but play no role in antibody production.

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