Science Ch 24.2 Flashcards
Active Immunity
results when an immune response to a pathogen produces memory cells
Antibody
are large Y-shaped proteins that recognize and bind antigens
B Cell
One of the two major types of lymphocyte cells. They Mature in bone marrow, they recognize and respond to particular pathogens
Cell-mediated immune response
Involves mainly T Cells. It leads to the destruction of cells that are infected with viruses
Hormonal immune response
One of the two main types of immune responses. Involves mainly B Cells and takes place in the blood and lymph.
Immune Response
Is defense is specific to a particular pathogen, and it allows the immune system to “remember” the pathogen after the infection is over.
Immunity
Being able to resist a pathogen
Immunization
Is the deliberate exposure of a person to a pathogen in order to provoke an immune response and the formation of a memory cell to that specific pathogen
Lymph
Is a fluid that leaks out of the capillaries into spaces between cells
Lymphatic system
Major part of the immune system. It produces leukocytes called lymphocytes.
Lymph Nodes
filter substances that travel through the lymphatic fluid
Lymphocyte
The key cells involved in the immune response. They recognize and help destroy particular pathogens
Memory Cell
They retain the “memory” of a specific pathogen long after the infection is over. They help launch a rapid response against the pathogen if it invades the body again in the future
Passive Immunity
Results when antibodies are transferred to a person who have never been exposed to the pathogen
T Cell
One of the two major types of lymphocyte cells. They mature in the thymus, and recongnize and respond to particular pathogens.
