Which one of the following four glands is correctly matched with the a...
The correct answer is B: Thymus - starts undergoing atrophy after puberty.
- Thymus gland is part of the immune system and produces T-lymphocytes.
- Atrophy means the decrease in size or wasting away of an organ.
- After puberty, the thymus gradually shrinks in size and becomes less active.
- This process is normal as the production of T-cells decreases with age.
- The thymus still plays a role in immune function even though it undergoes atrophy.
Which one of the following four glands is correctly matched with the a...
Correct Answer Explanation
The correct answer is option 'B': Thymus - starts undergoing atrophy after puberty. Below is a detailed explanation of why this option is accurate compared to the others.
Thymus Gland Atrophy
- The thymus gland plays a crucial role in the immune system, particularly in the maturation of T-lymphocytes (T-cells).
- After puberty, the thymus begins to shrink and is replaced by adipose (fat) tissue, a process known as atrophy.
- This atrophy leads to a decrease in the production of T-cells, which can impact immune responses.
Other Options Explained
- Thyroid - Hyperactivity and Cretinism:
- Hyperactivity of the thyroid gland typically causes conditions like hyperthyroidism, not cretinism. Cretinism is associated with hypothyroidism (underactivity) in children.
- Parathyroid - Calcium Regulation:
- The parathyroid glands secrete parathormone (PTH), which actually promotes the release of calcium ions from bones into the blood, increasing blood calcium levels, rather than moving calcium from the blood into bones.
- Pancreas - Delta Cells Function:
- Delta cells of the Islets of Langerhans secrete somatostatin, which inhibits insulin and glucagon secretion. It does not stimulate glycolysis; rather, it regulates the overall balance of glucose metabolism.
Conclusion
Given this information, option 'B' accurately describes the thymus gland's function and its changes after puberty, making it the correct choice among the options provided.
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