Organisms And Population Question 99
Question: Damage to thymus in a child may lead to [CBSE PMT 2005]
Options:
A) A reduction in haemoglobin content of blood
B) A reduction in stem cell production
C) Loss of antibody mediated immunity
D) Loss cell mediated immunity
Show Answer
Answer:
Correct Answer: D
Solution:
At the time of birth, Thymus is a prominent atrophics.
This gland secretes thymosin hormone, thymic humoral factor, thymic factor and thymopoietin.
Proliferation of lymphocytes and differentiation of these lymphocytes and differentiation of these lymphocytes into a variety of clones are induced by these factors.
These clones are differentially specialized to destroy different specific category of antigens and pathogens.
Thus thymus gland brings T-lymphocytes for cell mediated immunity.
BETA
