Thymus is the primary lymphocyte, which is involved the production and maturation of T lymphocytes. T lymphocytes provide cell mediated immunity. B cells, which mature in the bone marrow, are responsible for antibody-mediated immunity. Related Theory Immature T lymphocytes are cells that have not yet encountered their specific antigen. In peripheral lymphoid organs, they can interact with antigen-presenting cells (APCs), which use MHC molecules to present antigen. Once the T lymphocytes recognise their specific antigens, they proliferate and differentiate into one of several effector T lymphocyte subsets. Effector T lymphocytes interact with host cells (rather than the pathogen) to carry out their immune function. T lymphocytes use co-receptors to bind to the MHC molecules. Co-receptors can be either CD4 or CD8. CD proteins help to differentiate major groups of effector T lymphocytes. immature C8+T lymphocytes will become cytotoxic T lymphocytes. Alternatively, CD+T lymphocytes will become T helper lymphocytes, each of which specialised for particular tasks.
Damage to thymus in a child may lead to:
NEET UG 2005 — Zoology Human Health and Diseases
Damage to thymus in a child may lead to:
Held on 30 Apr 2005 · Verified 9 Jul 2026.
Options
- A
a reduction in haemoglobin content of blood
- B
a reduction in stem cell production
- C
loss of antibody mediated immunity
- D
loss of cell mediated immunity.
Did you get this right?
Sign in to track your attempts and accuracy.
Your note
Sign in to keep a private note on this question. Nothing you write is ever public.
NEET UG Human Health and Diseases in other years
More NEET UG Human Health and Diseases questions
Neoplastic characteristics of cells refer to : A. A mass of proliferating cell B. Rapid growth of cells C. Invasion and damage to the surrounding tissue D. Those confined to original location Choose the correct answer from the options given below:
After maturation, in primary lymphoid organs, the lymphocytes migrate for interaction with antigens to secondary lymphoid organ(s) / tissue(s) like A. thymus B. bone marrow C. spleen D. lymph nodes E. Peyer's patches Choose the correct answer from the options given below
Identify the statement that is NOT correct.
Which of the following type of immunity is present at the time of birth and is a non-specific type of defence in the human body?
Which are correct: A. Computed tomography and magnetic resonance imaging detect cancers of internal organs. B. Chemotherapeutics drugs are used to kill non-cancerous cells. C. $\alpha$-interferon activate the cancer patients' immune system and helps in destroying the tumour. D. Chemotherapeutic drugs are biological response modifiers. E. In the case of leukaemia blood cell counts are decreased. Choose the correct answer from the options given below:
Other Zoology topics for NEET UG
Keep practicing Human Health and Diseases
Work through every NEET UG Human Health and Diseases PYQ, year by year.