Question
The most accepted theory of ageing is :
less RBC in blood
thymus gland becomes non-functional
brain cells die with ageing
all of the above
Solution
B.
thymus gland becomes non-functional
Ageing is a progressive deterioration in structure and function of cells and tissues with age. According to the immunity theory of ageing due to decline of thymus, immunity decreases resulting in more diseases, damage and destruction of cells and tissues.
