Cells of the Immune System Flashcards
What are the 2 types of immunity?
Innate and Adaptive
What type of immune system is present at birth?
Innate
What type of immune system has no memory?
Innate
What type of cells are monocytes, macrophages, neutrophils?
Phagocytes
What does the adaptive immune system split in to>
Humoral and Cellular
What cells are involved in humoral immunity?
Antibodies
What cells are involved in cellular immunity?
B lymphocytes
T lymphocytes
Helper T cells
Cytotoxic T cells
How does vaccination work?
tries to trigger the primary response by using a non-infective version of the microorganisms so that if real infectious agent is encountered there wont be any symptoms of disease.
What is an antigen?
Any FOREIGN substance that elicits an immune response.
What is the name of the portion of the antigen that is recognised?
Epitope OR antigenic determinant
What are epitopes recognised by?
antibodies and T cells
What are leukocytes?
White blood cells
What are basophils triggered by?
Allergens
Platelets, antigen presenting cells, mast cells, and endothelial cells are what type of cells?
Accessory cells
What are platelets responsible for?
Blood clotting anf inflammation
What is the role of antigen presenting cells?
Present antigens to T cells
Where are mast cells only found?
Connective tissue
Where do B cells originate?
Bone marrow
Where do T cells originate?
Thymus
What are the 3 types of lymphocytes?
B lymphocytes
T lymphocytes
NK cells
What do NK cells contain?
Granules
Where do B cells and T cells accumulate?
secondary lymphoid organs
What are secondary lymphoid organs?
lymph nodes, spleen, MALT
What is the key to immunity?
clonal expansion
