Immune System Steps Flashcards
- Patrolling for pathogens
White blood cells called called macrophages _
Attack pathogen by engulfing it
- Patrolling for pathogens
Macrophage then breaks down pathogens and _
Displays its antigen molecules on its own surface
- Patrolling for pathogens
Macrophages displays pathogen’s antigen molecule on its own surface to _
Alert other cells of the problem
- T cells replicate
White blood cells called T cells recognize and bind to antigens, and trigger responses that _
Coordinate cell activity in the immune system
- T cells replicate
_ tell killer T cells to replicate and activate B cells
Cytokines
- B cells attack
Activated B cells replicate and form (2)
Memory B cells
Plasma cells
- B cells attack
Memory cells hold info about an antigen, plasma cells release antibodies that _
Stick to surface of specific pathogen
Memory B cells circulate in blood stream, waiting for
Future infections
Antibodies can stop some _
Pathogens producing toxins
Y-shaped proteins (antibodies) bind to _
Antigens in bloodstream
Plasma cells produce _
Antigen-specific antibodies
- Marked for destruction
Antibodies prevent pathogens from _
Binding to and infecting cells
- Marked for destruction
Antibodies also help _
Stick pathogens together in a clump
- Marked for destruction
By Stickkng pathogens together in a clump, it is easier for _
Macrophages to seek out invading pathogens and destroy them
Antibodies attached to bacterium antigens attract _
Macrophage
Macrophage engulfs bacterium and bacterium is broken down in _
Cell’s vacuole
