OVERVIEW OF THE IMMUNE SYSTEM
THE GOOD BAD AND UGLY OF THE IMMUNE SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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antibodies
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breast milk
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B cells
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cytotoxic T cells
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Detailed explanation-1: -B-lymphocytes form army of proteins called antibodies in response to pathogen in blood and are stimulated by antigen and T-helper cells. Therefore, B-lymphocytes provide humoral mediated immunity. T-lymphocytes provide cell mediated immunity. So, the correct option is ‘B-lymphocytes’.
Detailed explanation-2: -Cytotoxic cells are involved in the direct killing of intracellular pathogens, and the elimination of mutated and cancerous cells. These immune responses are generated by T cells when they recognize an antigen, which is presented to them by antigen-presenting cells.
Detailed explanation-3: -The main components of the immune system are the thymus, spleen, Lymph Nodes, bone marrow and white blood cells. A brain is not involved in elicitation of immune response but regulates the function of the whole body. Hence option A is correct.
Detailed explanation-4: -In mammals there are five types of antibody: IgA, IgD, IgE, IgG, and IgM. Each immunoglobulin class differs in its biological properties and has evolved to deal with different antigens. Antibodies are synthesized and secreted by plasma cells that are derived from the B cells of the immune system.