Human Immune System: The Fundamentals (HSC SSCE Biology): Flashcards
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When immune system evolved
When immune system evolved
Around 500 million years ago
Innate immunity learning/memory
Innate immunity learning/memory
No learning or memory, genetically pre-programmed
Third line of defence
Third line of defence
Adaptive immune system/acquired immunity
B lymphocytes produce
B lymphocytes produce
Antibodies (immunoglobulins)
T lymphocytes transform into
T lymphocytes transform into
Cytotoxic T cells (killer T cells)
Four features of adaptive immunity
Four features of adaptive immunity
Specificity, diversity, memory, self-tolerance
Secondary vs primary immune response
Secondary vs primary immune response
More rapid, greater antibody production
Plasma cells antibody secretion rate
Plasma cells antibody secretion rate
Up to 2000 molecules per second
MHC molecules definition
MHC molecules definition
Self-identity molecules of organisms
Helper T cells role
Helper T cells role
Bridge between humoral and cell-mediated immunity