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Human Health and Diseases. — Bio Zoology STD 12 — Question

Tamilnadu BoardEnglish MediumSTD 12Bio ZoologyHuman Health and Diseases.2 Marks
Question
Mucus membrane entraps foreign microorganisms and competes with microbes for attachment. What is diapedesis?
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Answer

Tissue damage and infection induce leakage of vascular fluid, containing chemotactic signals like serotonin, histamine and prostaglandins. They influx the phagocytic cells into the affected area. This phenomenon is called diapedesis.

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