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Question

Ageing is caused by disappearance of
Or
Which one of the following is gradually reduced and degenerated in ageing according to immunity theory
Or
Which is called "Clock of ageing"

A
Thyroid
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B
Parathyroids
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C
Thymus
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D
Pitutary
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Solution

The correct option is C Thymus
The thymus gland is a small irregular shaped gland in the mediastinum.
The gland is part of both endocrine systems as well as the lymphatic system of the body.
This gland gradually reduces in size as the age of person advances thus it is degenerated in ageing according to the immunity theory.
Thus, the gland is also called a 'Clock of Ageing'.
So, the correct answer is 'Thymus'.

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