Question

Psychoneuroimmunology studies the effects of stress on the immune system. Identify the correct statements describing its working:
(A) The Leucocytes within the immune system identify and destroy antigens such as viruses
(B) Stress does not affect natural killer cell cytotoxicity
(C) Stress leads to the production of antibodies
(D) There are several kinds of Leucocytes including the T cells, B cells and natural killer cells
(E) D-cells produce antibodies

• A. (A), (B) & (C) only
• B. (B), (C) & (D) only
• C. (A), (C) & (D) only
• D. (A), (B) & (E) only

Answer 1

The Correct Option is C

The correct statements regarding psychoneuroimmunology and the immune system are:

(A): True. Leucocytes (white blood cells) identify and destroy pathogens like viruses, playing a crucial role in immune defense.

(B): False. Stress does affect natural killer cell cytotoxicity, often decreasing their effectiveness in fighting off infections and tumors.

(C): True. Stress can lead to the production of antibodies as part of the immune response, though chronic stress can eventually weaken the immune system.

(D): True. There are various types of leucocytes, including T cells, B cells, and natural killer cells, each with distinct roles in the immune system, such as targeting infected cells or producing antibodies.

(E): False. B cells, not D-cells, are responsible for producing antibodies, which help in neutralizing pathogens.

These statements reflect the complex relationship between stress and the immune system, highlighting how stress can both influence immune function and contribute to health outcomes.