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Phagocyte Pathogen Phagosome Products Phagocytosis Work Attracted Chemotaxis

Phagocytosis involves a phagocyte being attracted to a pathogen, binding to its antigens, engulfing it into a phagosome, fusing with lysosomes to digest it, and then egesting indigestible material.

- phagocyte attracted to pathogen by chemotaxis - phagocyte receptors bind to pathogen antigens - pseudopodia extend around pathogen, engulfing it in phagosome (vesicle) - lysosomes migrate towards and fuse with phagosome (NOT EXOCYTOSIS) - lysozymes hydrolyse cells or bacterial cell walls - soluble products absorbed into cytoplasm - indigestible products egested

Front How does phagocytosis work?
Back - phagocyte attracted to pathogen by chemotaxis

- phagocyte receptors bind to pathogen antigens
- pseudopodia extend around pathogen, engulfing it in phagosome (vesicle)
- lysosomes migrate towards and fuse with phagosome (NOT EXOCYTOSIS)
- lysozymes hydrolyse cells or bacterial cell walls

- soluble products absorbed into cytoplasm
- indigestible products egested

Tags: immunity

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