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    NEET 2026 Preparation Tips for Chemistry, Biology and Physics

    Thymus Gland MCQ - Practice Questions with Answers

    Edited By admin | Updated on Sep 18, 2023 18:34 AM | #NEET

    Quick Facts

    • 18 Questions around this concept.

    Solve by difficulty

    Which of these glands is large at the time of birth but in adults, it reduces to a very small size? 

    Concepts Covered - 1

    Thymus Gland
    • The thymus gland is a lobular structure located between lungs behind sternum on the ventral side of the aorta.
    • It is derived from the endoderm.
    • The thymus plays a major role in the development of the immune system.
    • This gland secretes the peptide hormones called thymosins. 
    • Thymosins play 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 is degenerated in old individuals resulting in a decreased production of thymosins 
    • As a result, the immune responses of older persons become weak
    • It shows presence of Hassall's Corpuscles (macrophages) which are phagocytic in nature 
       

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    Thymus Gland

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