Which of the following is (are)true of the thymic lobules
A)They lack an internal structure of a cortex and a medulla.
B)They are the site of the production of lymphocytes, but not of the T cells.
C)They contain lymphoid stem cells and thymic corpuscles.
D)They contain special capillaries that selectively acquire circulating antigens to pass through the tissues.
E)All of the answers are correct.

Question

Quizplus · Accepted Answer

Thymic lobules contain lymphoid stem cells and thymic corpuscles, which are specialized structures that play a role in the maturation of T cells. They lack an internal structure of a cortex and a medulla (A) because the thymus is not organized into these distinct regions like lymph nodes. While lymphocytes are produced in the thymus, T cells specifically are produced and matured there (B). Thymic lobules do not have special capillaries that selectively acquire circulating antigens (D), although dendritic cells in the thymus can present antigens to developing T cells. Therefore, (E) is incorrect.

Which of the Following Is (Are)true of the Thymic Lobules