Immune System Flashcards
Active immunity
antibodies made in response to antigen
Where do T-cells mature?
Thymus (born in bone)
Humoral immunity
B cells recognize antigens and secrete antibodies
How are antigens presented?
phagocytosis of antigen
MHC presents fragment
What type of cell aids in B cell proliferation?
T helper cells (release cytokines)
Cell mediated immunity
No antibodies!
Phagocytes (macrophages/natural killers)
Killer T-cells
Cytokines
What 2 types of cells do activated B cells become when proliferated?
Memory
Plasma
Antigen-presenting cells
Dendritic cells
B cells
some phagocytes
some epi/endothelial cells
Innate immune system
Barriers Inflammation WBC's (leukocytes) - natural killers - mast cells - eosinophils - basophils - macrophages - neutrophils Dendritic cells
Adaptive immune system
specific pathogen
memory
CD8+
MHC I
Killer T cells
clonal selection
CD4+
MHC II
Helper T cells
Granulocytes
neutrophils
basophils
eosinophils
mast cells
Lymphocytes
B cells
T cells
WBC’s
monocytes
lymphocytes
granulocytes
