Ageing starts with disappearance of

Spleen

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Pituitary gland

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Thymus gland

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Parathyroid gland

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Solution

The correct option is D Thymus gland

Ageing starts with the disappearance of thymus according to immunity theory . Thymic involution (shrinking of the thymus with age) is believed to be the main age-related change in the immune system, and this alteration begins after puberty.
So, the correct option is ‘thymus gland’.

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___ in parathyroid gland secrete parathormone.

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