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Human Health and Disease

Short Answer Type

71. Define Heroin, LSD and Psychotherapy.

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72. Whatis withrawal syndrome?

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Long Answer Type

73. List the effects of misuse of anabolic steroids in females.

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74. Briefly describe life history of malarial parasite.

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75. Give an account of following diseases (i) Ascariasis (ii) Filariasis (iii) Ringworms.

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76. Describe the primary lymphoid organs of the body and their role.

Lymphoid organs are the organs where lymphocytes originate and / or mature and proliferate. The primary lymphoid organs are bone marrow and thymus where immature lymphocytes differentiate into antigen sensitive lymphocytes.

(i) Bone marrow. Bone marrow present in bones is the main lymphoid organ where all blood cells including lymphocytes are produced. Bone marrow provides the microenvironment for the development and maturation of B lymphocytes (a type of lymphocytes discussed earlier).

(ii) Thymus. Thymus is a lobed organ located near the heart and beneath the breastbone. It provides microenvironment for the development and maturation of T-lymphocytes.

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