Innate Immunity Flashcards
1
Q
Immunity
A
Ability to resist infection and disease
2
Q
First line of defence
A
Mechanical and chemical barriers.
3
Q
Second line of defence
A
Inflammation response, phagocytosis
4
Q
Third line of defence
A
Specific immune responses and natural killer cells
5
Q
Innate immunity components
A
Epithelial barrier cells, phagocytosis cells, NK cells, cytokines
6
Q
Phagocytic cells
A
Neutrophils and macrophages
7
Q
Cytokines
A
Trigger or regulate immune responses
8
Q
Phagocytes
A
- Extend foot-like projections (pseudopods) toward microorganisms
- Pseudopods encircle the microorganism in a phagosome
- Lysosomes drain the phagosome which kills the microorganism
9
Q
Phagocytosis
A
Innate defence but plays role in adaptive immunity. Ingestion and destruction of microorganisms or other small particles
10
Q
Which is the most numerous phagocyte?
A
Neutrophils
