Aparna, a gross anatomist who has been teaching human anatomy for 35 years, told her class that in adults the thymus is atrophied and has no function. Is she correct? Explain.

Although the thymus is shrinking with age, it is still functional in adults, thereby this statement is incorrect  

Explanation:

The thymus is a specialized primary lymphoid organ that has a key role in the production and maturation of T cells (i.e., thymus-derived cells). The thymus grows until puberty, but during adulthood, this vital organ starts to shrink, a process known as 'thymic involution'. During all life, the thymus plays roles in immunity and autoimmunity. The thymus produces progenitor cells that mature into T-cells, which are one of the main components of the adaptive immune system. These cells function by killing infected/sick cells (for example, cancer cells), by activating other immune cells, by synthesizing signaling molecules (i.e., cytokines), etc.

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