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What is Innate Immunity? Mention any two types of Innate immunity, , barriers., , Innate immunity is non-specific type of defence that is present at the time of, , birth. (M-18) 150, , Innate immunity consists of four types of barriers., , (i) Physical barriers (ii) Physiological barriers, , (iii) Cellular barriers (iv) Cytokine barriers (Any two barriers), What is an allergy? Name the two chemicals released by mast cells, in the body during allergy., , The exaggerated response of the immune system to certain antigens present, , , , , , , , , , . : i (M-19) 153, in the environment is called allergy., Histamine and Serotonin are the two chemicals released by mast cells in the, body during allergy., Three marks questions, Mention three types of innate barriers of defence with an example each., (i) Physical barriers : Example: Skin / Mucus, (ii) Physiological barriers : Example: Acid in the stomach / saliva in the, mouth / tears from eyes (M-15) 150, , (iii) Cellular barriers : Example: Polymorpho-nuclear leukocytes (PMNLneutrophils) / monocytes / natural killer cells (type of lymphocytes), , (iv) Cytokine barriers : Example: Interferons, , Briefly explain any three prevention and control measures of drug, , /alcohol abuse., , e Avoid undue peer pressure - Every child has his/her own choice and, personality, which should be respected and nurtured. A child should not, be pushed unduly to perform beyond his/her threshold limits., , e Education and counseling - Educating and counseling him/her to face, problems and stresses, and to accept disappointments and failures., , Child should be encouraged to take up healthy hobbies like sports,, reading, music, yoga and other extracurricular activities., , e Seeking help from parents and peers - The child should seek help from (M-14) 162/163, parents and peers to solve problems., , ¢ Looking for danger signs = Parents, teachers, and friends should be alert, to identify danger sign: ciated with drug / alcohol abuse so that, appropriate remedial measures or treatment can be initiated., , ¢ Seeking professional and medical help = Affected individuals should, seek the help of highly qualified psychologists, psychiatrists, and, deaddiction and rehabilitation programmes to come out of the problem., , Mentioning Any Three Measures — 2 mark each, Explanation of mentioned Measures - 2 mark each, , , , , , , , , , , , , List any three types of Innate immunity barriers and give an example, , for each., (i) Physical barriers : Example: Skin / Mucus, (ii) Physiological barriers : Example: Acid in the stomach / saliva in the, , mouth / tears from eyes (J-14) 150, (iii) Cellular barriers : Example: Polymorpho-nuclear leukocytes (PMNLneutrophils) / monocytes / natural killer cells (type, of lymphocytes), (iv) Cytokine barriers : Example: Interferons, , , , , , , , , , , , es, Page 44