Immune Cells

Question 1

Complement Proteins

Answer 1

Reside in bloodstream.
Cause opsonisation: the marking of pathogens for phagocytosis
Membrane attack complexes: cause lysis in infected cells

Question 2

Interferons

Answer 2

Released from virally infected cells.
Roles:
- make nearby unaffected cells resistant.
- make nearby affected cells undergo apoptosis.
- activate macrophages.
- interfere with viral replication.

Question 3

Neutrophils

Answer 3

Perform phagocytosis, resulting in the death of the neutrophil itself.
- short lived

Question 4

Macrophages

Answer 4

Perform phagocytosis and antigen presentation.

Question 5

Dendritic Cells

Answer 5

Reside in tissue.
Performs phagocytosis and antigen presentation.
travel to lymph nodes

Question 6

Mast Cells

Answer 6

Release cytokines and histamines.
Causing:
- vasodilation
- increased blood vessel permeability
- attract phagocytes

Question 7

Natural Killer Cells

Answer 7

Attack virally infected cells by inducing apoptosis.

Question 8

Eosinophil