Question

Which is correct sequence of events of inflammation or phagocytosis?

• A. Vasodilation $\to$ Diapedesis $\to$ Adhesion $\to$ Chemotaxis $\to$ Phagocytosis
• B. Vasodilation $\to$ Adhesion $\to$ Emigration $\to$ Chemotaxis $\to$ Diapedesis $\to$ Phagocytosis
• C. Adhesion $\to$ Vasodilation $\to$ Diapedesis $\to$ Chemotaxis $\to$ Phagocytosis
• D. Vasodilation $\to$ Adhesion $\to$ Chemotaxis $\to$ Diapedesis $\to$ Phogocytosis

Answer 1

The correct option is B Vasodilation $\to$ Adhesion $\to$ Emigration $\to$ Chemotaxis $\to$ Diapedesis $\to$ Phagocytosis

Vasodilation is one of the earliest manifestations of acute inflammation. It refers to the widening of the blood vessels. Then leucocyte adheres to the vascular endothelium. The changes in the structure of microvascular emigrate the leucocytes from microcirculation followed by chemotaxis, whereby the cells move in response to chemical signals and the movement is known as diapedesis. Lastly is phagocytosis where the cell (or the phagocyte) engulfs a solid particle to form an internal vesicle known as phagosome,
Thus, the correct answer is option B.