Histamine is secreted by:
| 1. | Mast cells | 2. | Fibroblast |
| 3. | Histiocytes | 4. | Plasma cells |
During injury, mast cells secrete:
1. Histamine
2. Heparin
3. Prothrombin
4. Antibodies
Mast cells of connective tissue contain:
1. Heparin and histamine
2. Heparin and calcitonin
3. Serotonin and melanin
4. Vasopressin and relaxin
Use of anti-histamine and steroids give a quick relief from:
| 1. | allergy | 2. | nausea |
| 3. | cough | 4. | headache |
Which of the following are the reason(s) for rheumatoid arthritis? Choose the correct option.
| I. | Lymphocytes become more active |
| II. | Body attacks self cells |
| III. | More antibodies are produced in the body |
| IV. | The ability to differentiate pathogens or foreign molecules from self-cells is lost |
1. I and II
2. II and IV
3. III and IV
4. I and III
| Statement I: | Autoimmune disorder is a condition where body defense mechanism recognized its own cells as foreign bodies |
| Statement II: | Rheumatoid arthritis is a condition where body does not attack self cells |
| Statement I: | Bone marrow is the main lymphoid organ where all blood cells, including lymphocytes, are produced. |
| Statement II: | Both bone marrow and thymus provide micro environments for the development and maturation of T-lymphocytes. |
| 1. | Both Statement I and Statement II are incorrect. |
| 2. | Statement I is correct but Statement II is incorrect. |
| 3. | Statement I is incorrect but Statement II is correct. |
| 4. | Both Statement I and Statement II are correct. |