Topic 6 -10 Flashcards
What are white blood cells also known as?
Leucocytes
What is the primary role of white blood cells?
Important in immune responses
Name two important types of white blood cells involved in preventing infection.
Phagocytes and lymphocytes
What do phagocytes do?
Engulf particles such as bacteria into a vacuole within the cytoplasm
What is an antigen?
Anything that causes an immune response, usually foreign proteins or glycoproteins
What is the major histocompatibility complex (MHC)?
A group of proteins that body cells carry to be recognized as ‘self’ by white blood cells
What process do phagocytes use to destroy engulfed particles?
Fusing the vacuole with a lysosome containing digestive enzymes
True or False: Neutrophils and macrophages are involved in specific immune responses.
False
What do cytokines do?
Attract other immune cells
What type of immune response do B lymphocytes (B cells) target?
Humoral immune response
What do some B cells become and what is their function?
Plasma cells; they secrete antibodies that cause removal of antigens
Name three types of T lymphocytes (T cells) involved in immune responses.
- T killer cells
- T helper cells
- T suppressor cells
What is the role of T killer cells?
Destroy body cells that have foreign proteins on their surface
What is the function of T helper cells?
Stimulate all specific responses
What do T suppressor cells do?
Stop the response when the antigen has been removed
Fill in the blank: Macrophages are also important in stimulating ______ to initiate a specific immune response.
Lymphocytes
What is the role of inflammation in the immune response?
Destroys antigens by phagocytosis and produces cytokines
