the thymus initially increases in size and then decreases in size from adolescence through old age.
The thymus is so small in older people it appears as though it is not there. It shrivels up after puberty or so.
It acts as endocrine gland and secretes T3 and T4 hormones. It is the throne of immunity.
thymus
thymus
The thymus is the organ that regresses considerably with age.
thymus
The Thymus
The thymus atrophies with age -- in youth it is responsible for building up a stockpile of T cells, and it begins to atrophy once it stops production. It then takes on a smaller role of stimulating the immune system -- at birth, the thymus weighs approx 15 grams. During puberty it weighs approx 35 grams. By age 25, it drops down to 25 grams, and by age 60 it weighs a mere 1/2 gram.
thymus
Thymus gland:)
thymus
thymus
The thymus is the organ that regresses considerably with age.
Age factor; as individual gets old, thymus gland shrinks, thereby decreasing in function
The lymphocytes become immunocompetent when the thymus secretes hormones. Lymphocytes are white blood cells that are found in a vertebrate's immune system.
thymus
The Thymus
thymus
The thymus gland shrinks in size with age.