The size of this gland varies significantly with the age of the individual.

Which endocrine gland becomes inactive in old age?

Which structure gradually becomes smaller with increasing age?

Which of the following glands is responsible for immunity in humans?

The immune responses in older people are weak due to the degeneration of which endocrine gland?

Select the correct statements regarding Thymus gland.
i. It is located in the upper part of thorax.
ii. It is made up of four lobes of lymphoid tissue.
iii. It is a prominent gland formed at birth and remains active throughout life.
iv. It is also called temporary gland.
v. It plays an important role in the development of immune system and provides humoral immunity.
In the light of above statements,choose the correct option from below.