Mast cells of connective tissue contain:
Correct answer: B. Heparin and histamine
- A. Vasopressin and relaxin
- B. Heparin and histamine
- C. Heparin and calcitonin
- D. Serotonin and melanin.
Explanation
Mast cells are the large cells with densely granular cytoplasm that is found in connective tissues. Their granules contain histamine which is a vasodilator, heparin which is an anticoagulant and serotonin which acts as a mediator of inflammation and allergic reactions. Vasopressin is a hormone secreted by posterior pituitary gland. Calcitonin is a hormone secreted by thyroid gland. Melanin is a pigment produced by specialized epidermal cells called melanocytes. Relaxin is a hormone produced by the corpus luteum and placenta during the terminal stages of pregnancy.
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