Thymus Gland

F. Thymus gland : The thymus gland is a soft, pinkish, bilobed mass of lymphoid tissue located in the upper thorax, on the dorsal side of the heart. It is prominent at birth but gradually atrophies through adulthood, which is why it is described as a temporary gland. It secretes the hormone thymosin, which plays a central role in developing the immune system by driving the maturation of T-lymphocytes, and it also supports humoral immunity by promoting antibody production -- making the …