18372260
Description
Flashcards by Sam Gunnell, updated more than 1 year ago
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Created by Sam Gunnell
over 5 years ago
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| Question | Answer |
| What type of phagocyte turn into antigen presenting cells? | Macrophages |
| What is the name of the process in which a macrophage engulfs a microbe? | Phagocytosis |
| What happens before the pathogen is engulfed? | The antigen on the pathogen attaches to receptors on the macrophage |
| What happens when a macrophage engulfs a pathogen? | 1) It is enclosed in a vesicle (phagosome) 2) The lysosomes fuse with the phagosome forming a phagolysome 3) The pathogen is digested by hydrolytic enzymes within the lysosome 4) Fragments of the antigen is presented on the surface of the macrophage and waste products are removed |
| By what procewss does waste products leave the macrophage? | Exocytosis |
| What key word is used to describe an enzyme breaking down a pathogen? | Digests |
| How do neutrophils deal with pathogens? | Similarly to macrophages, the antigens of the pathogen bind to receptors and is englufed by endocytosis forming a phagosome. Lysosomes fuse with the phagosome and release lytic enzymes into it. The pathogen is completly destroyed and the neutrophil dies |
| Give a difference between how macrophages and neutrophils deal with pathogens | ~Macrophages don't fully destroy the pathogen so it can be presented and the macrophage stays alive after ~Neutrophils fully destroy the pathogen and die after |
| What are the two things that happen once a pathogen is found? | ~It is englufed by macrophages, releases cytokines to activate T lymphocytes, producing T killer and T helper cells (the T helper cells can turn into memory (T cells) ~Complimentary B lymphocytes engluf patjhogen and divide to form many memory B cells and plasma cells that produce antibodies |
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