Phagocytosis involves recognizing a pathogen's antigen, engulfment into a phagosome, lysosomal enzymes breaking down the pathogen, and presentation of the pathogen's antigen on the phagocyte surface to activate T-lymphocytes.
Phagocytosis steps: 1. Phagocyte recognizes pathogen's antigen. 2. Phagocyte engulfs pathogen, forming a phagosome. 3. Lysosomes release lysozyme to break down the pathogen. 4. Pathogen's antigen is presented on the phagocyte's surface to activate T-lymphocytes.
| Front | Describe the steps of phagocytosis |
|---|---|
| Back | 1. Phagocyte recognizes foreign antigen on the surface of pathogen 2. Phagocyte forms a phagosome and engulfs the pathogen 3. pathogen held in phagocytic vacuole 4. lysosomes move around pathogen and release enzyme lysozyme which hydrolyses cell wall of pathogen 5. Phagocyte presents pathogens antigen on its surface so T- lympocyte can activate a immune response. |
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