Thymus Gland MCQ - Practice Questions with Answers
Edited By admin | Updated on Sep 18, 2023 18:34 AM | #NEET
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18 Questions around this concept.
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EASYWhich 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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