Thymus: The thymus is a

The thymus is a small, bilobed organ that is part of the lymphatic and immune systems. It plays a vital role in the development and maturation of T-lymphocytes (T cells), which are essential for the adaptive immune system. The thymus is larger and more active during childhood and adolescence, gradually shrinking and becoming less functional as a person ages, a process known as involution. Learn about the thymus gland, a soft organ in your chest that produces T cells and hormones for your immune system. Find out what can go wrong with your thymus and how to recognize the signs of thymus problems. thymus , pyramid-shaped lymphoid organ that, in humans, is immediately beneath the sternum (breastbone) at the level of the heart. The organ is called thymus because its shape resembles that of a thyme leaf. The primary function of the thymus is to facilitate the maturation of lymphocytes known as T cells, or thymus -derived cells, which determine the specificity of immune response to antigens (foreign substances) in the body. Unlike most other structures in the lymphatic system, the thymus ... Thymus- Structure and Functions . The thymus is a lymphocyte-rich, bilobed, encapsulated organ located behind the sternum, above and in front of the heart.