Question

Which of the following gland actively participates in ageing?

• A. Adrenal gland
• B. Pancreas gland
• C. Thymus
• D. None of the above

Answer 1

Answer: (C)

Thymus

• The thymus gland is a lobular structure located between lungs behind sternum on the ventral side of the aorta.
• It secretes a peptide hormone called Thymosin. Thymosin plays a major role in the differentiation of T-lymphocytes, which provide cell-mediated immunity. In addition, thymosins also promote the production of antibodies to provide humoral immunity.
• The thymus gland is degenerated in old individuals resulting in a decreased production of thymosins. As a result, the immune responses of old persons become weak. Hence Thymus gland actively participates in ageing.
• So, the correct answer is 'Thymus'.