MICROANATOMY

Detailed explanation-1: -In zoology, the thymus is an organ located in the upper chest (thorax) or neck of all extant vertebrate groups: fish (including Chondrichthyes), amphibians, reptiles, birds, and mammals.

Detailed explanation-2: -The mammalian thymus is a bilobed lymphoid organ situated in front of the heart in the upper part of the sternum. The thymus is especially important before puberty for its role in developing the immune system. T Cells originate from the thymus before puberty.

Detailed explanation-3: -The thymus gland is located in the anterior part of the chest, right behind the breastbone (or the sternum) and between the lungs.

Detailed explanation-4: -In addition, the thymus produces a hormone which has an immunotrophic effect, i.e. it endows cells having immunological potential with immunological competence. In some animals other organs, in addition to the thymus, are responsible for directing the normal development of the immunological system.