Question

A gland called'Clock of ageing'that gradually reduces and degenerates in ageing is (1)Thyroid (2)Thymus (3)Parathyroid (4)Pituitary

Answer 1

Answer:

Thymus is called the Clock Of Ageing

At birth , the thymus remains large. With gradual course of time , it reduces in size and becomes atrophic.

The main function of thymus :

• Training of the T - Lymphocytes into effector cells responsible for providing immunity to the body.
• They are mainly responsible for Cell-Mediated immunity.
• Also known as the School of Lymphocytes

With age , the thymus regresses and hence the immune defence against antigens in elderly persons also decreases.

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Answer 2

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A gland called'Clock of ageing'that gradually reduces and degenerates in ageing is

$\sf \pink{thymus}$

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