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Which of these glands is large at the time of birth but in adults, it reduces to a very small size?
- a)Thyroid
- b)Adrenal
- c)Thymus
- d)Spleen
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
Which of these glands is large at the time of birth but in adults, it ...
Thymus gland is the correct option as it is large at the time of birth but reduces to a very small size in adults.
Explanation:
Thymus gland is a specialized gland of the lymphatic system that plays an important role in the development of the immune system. It is located in the upper thorax, behind the sternum, and in front of the heart. The thymus gland is large at the time of birth and continues to grow until puberty. After puberty, the thymus gland begins to shrink and is replaced by fatty tissue. By the age of 20, the thymus gland has reduced to about one-third of its maximum size, and by the age of 50, it has reduced to only a few grams of fatty tissue.
Why is Thymus gland large at the time of birth?
The thymus gland is very active during fetal development and plays a crucial role in the development of the immune system. The thymus gland produces T-lymphocytes, which are immune cells that play a crucial role in fighting infections and diseases. The thymus gland is essential for the development of T-lymphocytes, which are responsible for recognizing and attacking foreign substances in the body. The thymus gland is particularly important during fetal development because the fetus does not have a fully developed immune system and relies on the mother's immune system for protection.
Why does Thymus gland reduce in size in adults?
The thymus gland begins to shrink after puberty because the production of T-lymphocytes decreases with age. As a result, the thymus gland is no longer required to produce large numbers of T-lymphocytes, and its function gradually declines. The thymus gland is gradually replaced by fatty tissue, which is an irreversible process. However, the T-lymphocytes that are produced by the thymus gland during fetal development and childhood continue to circulate in the body and play a crucial role in the immune system throughout life.
Explanation:
Thymus gland is a specialized gland of the lymphatic system that plays an important role in the development of the immune system. It is located in the upper thorax, behind the sternum, and in front of the heart. The thymus gland is large at the time of birth and continues to grow until puberty. After puberty, the thymus gland begins to shrink and is replaced by fatty tissue. By the age of 20, the thymus gland has reduced to about one-third of its maximum size, and by the age of 50, it has reduced to only a few grams of fatty tissue.
Why is Thymus gland large at the time of birth?
The thymus gland is very active during fetal development and plays a crucial role in the development of the immune system. The thymus gland produces T-lymphocytes, which are immune cells that play a crucial role in fighting infections and diseases. The thymus gland is essential for the development of T-lymphocytes, which are responsible for recognizing and attacking foreign substances in the body. The thymus gland is particularly important during fetal development because the fetus does not have a fully developed immune system and relies on the mother's immune system for protection.
Why does Thymus gland reduce in size in adults?
The thymus gland begins to shrink after puberty because the production of T-lymphocytes decreases with age. As a result, the thymus gland is no longer required to produce large numbers of T-lymphocytes, and its function gradually declines. The thymus gland is gradually replaced by fatty tissue, which is an irreversible process. However, the T-lymphocytes that are produced by the thymus gland during fetal development and childhood continue to circulate in the body and play a crucial role in the immune system throughout life.
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Community Answer
Which of these glands is large at the time of birth but in adults, it ...
Thymus is a soft, pinkish, bilobed mass of lymphoid tissue. It is a prominent gland at the time of birth but it gradually atrophies in the adult. It secretes a hormone thymosin that is involved in producing immunity. It also acts as a primary lymphoid organ where T-cells mature
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Which of these glands is large at the time of birth but in adults, it reduces to a very small size?a)Thyroidb)Adrenalc)Thymusd)SpleenCorrect answer is option 'C'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Which of these glands is large at the time of birth but in adults, it reduces to a very small size?a)Thyroidb)Adrenalc)Thymusd)SpleenCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of these glands is large at the time of birth but in adults, it reduces to a very small size?a)Thyroidb)Adrenalc)Thymusd)SpleenCorrect answer is option 'C'. Can you explain this answer?.
Which of these glands is large at the time of birth but in adults, it reduces to a very small size?a)Thyroidb)Adrenalc)Thymusd)SpleenCorrect answer is option 'C'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Which of these glands is large at the time of birth but in adults, it reduces to a very small size?a)Thyroidb)Adrenalc)Thymusd)SpleenCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of these glands is large at the time of birth but in adults, it reduces to a very small size?a)Thyroidb)Adrenalc)Thymusd)SpleenCorrect answer is option 'C'. Can you explain this answer?.
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