Uttarakhand PMT Uttarakhand PMT Solved Paper-2010

  • question_answer Damage to thymus in a child may lead to

    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

    Correct Answer: D

    Solution :

    Thymus gland is found in the upper part of thorax near the heart. It is a bilobed pinkish gland. At the time of birth, it is a prominent gland but in the adult, it gradually atrophies This gland secretes thymosin hormone, thymic humoral factor, thymic factor and thymopoietin Proliferation of lymphocytes and differebtuatuin of these lymphocytes into a variety of clones are induced by these factors. These clones are differentially specialised to destroy different specific category of antigens and pathogen? Thus, thymus gland brings fourth T-lymphocyies for cell mediated immunity.

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