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What is phagocytosis ?...

What is phagocytosis ?

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When pathogens or microbes penetrate the skin or mucous membrane certain cell types surge towards the site of infection. These can be neutrophils, monocytes and macrophages which engulf the pathogens to form a large intracellular vesicle called phagosome. This phenomenon is known as phagocytosis
The phagosome fuses with lysosome to form phagolysosome . The sceretion of lysosomal enzymes digests bacterial cells. The useful products remains in the cell while the waste is egested out of the cell.
Therefore, these phagocytes are also known as second line of defence.
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