Is it possible for lymphocytes to gain immunocompetence in the thymus of an 82-year-old person?
A) Yes, but the thymus has shifted to the production of B lymphocytes.
B) Yes, but fewer than in youth.
C) No, because the thymus has completely degenerated.
D) No, because all lymphocytes have turned into thymic corpuscles.

Question

Quizplus · Accepted Answer

The thymus does undergo involution with age, meaning it decreases in size and function. However, it is still possible for some lymphocytes to gain immunocompetence in the thymus of an 82-year-old person, although likely fewer than in youth. Option A is incorrect as the thymus does not produce B lymphocytes. Option C is incorrect as the thymus does not completely degenerate but instead undergoes involution. Option D is incorrect as thymic corpuscles are structures within the thymus that play a role in negative selection of T cells, and are not related to the differentiation of lymphocytes.

Is It Possible for Lymphocytes to Gain Immunocompetence in the Thymus