Question

Which of the following hormones are responsible for development of immunity

• A. Thymus hormones
• B. Thyroid hormones
• C. Pancreatic hormones
• D. Parathyroid hormones

Answer 1

The correct option is A Thymus hormones

• 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 hormones are responsible for the development of immunity.
• So, the correct answer is 'Thymus hormones'.