Phagocytosis Flashcards
1
Q
what is the first stage of phagocytosis
A
the phagocyte recognises a foreign antigen on a pathogen.
2
Q
the second stage of phagocytosis
A
the phagocyte engulfs the pathogen forming a vesicle called a phagosome.
3
Q
third stage of phagocytosis
A
lysosomes fuse with the phagosome.
4
Q
fourth stage of phagocytosis
A
lysozymes are released which hydrolyse molecules of the pathogen and destroy the pathogen.
5
Q
fifth stage of phagocytosis
A
The antigens of the pathogen are presented on the cell surface membrane of the phagocyte.
6
Q
what is a phagocyte called after phagocytosis
A
Antigen presenting cell.
7
Q
how to remember the stages of phagocytosis
A
P - hagocyte R - ecognises antigen E - ngulfs P - hagosome F - uses with lysosome L - ysozymes hydrolyse A - antigens presented M - embrane of cell
