GENERAL HISTOLOGY

Detailed explanation-1: -The thymus gland is most active during childhood. Your thymus actually starts making T-cells before you’re born. It keeps producing T-cells and you have all the T-cells you need by the time you reach puberty. After puberty, your thymus gland slowly starts to decrease in size and is replaced by fat.

Detailed explanation-2: -The thymus gland grows to its largest size during childhood and makes all the T cells we need before we become teenagers. After this, it gradually gets smaller, becomes less active and is replaced by fatty tissue. The thymus also produces a hormone called thymosin that helps make and develop T cells.

Detailed explanation-3: -The thymus is a primary lymphoid organ responsible for the production of immunocompetent T cells and, with aging, it atrophies and declines in functions.