Immunity Flashcards
Immune response not directed specifically to a particular infectious agent
Innate
First line (prevents entry)
Skin and mucous membranes
Guards with PRRs (pattern recognition receptors)
Sentinel cells (eg. dendritic cells)
Proteins triggered by bacterial capsule + cell wall substances, viral particles
Complement (C) proteins
When cells of the innate system remove and destroy invaders
Phagocytosis
Engulf/destroy, first recruited to site (short life span)
Neutrophils
Involved in allergic reactions, inflammation
Basophils
Fight parasitic worms, involved in allergic reactions
Eosinophils
Three types of white blood cells
Granulocytes, agranulocytes, lymphocytes
Agranulocytes that divide into macrophages and dendritic cells
Monocytes
Which cells are involved in humoral immunity?
B cells
Which cells are involved in cell-mediated immunity?
T cytotoxic and T helper
Is humoral extracellular or intracellular?
Extracellular
Cytotoxic T cells are CD_?
8
Helper T cells are CD_?
4