Class 4 Flashcards
Immunity
Protection from diseases
Natural immunity
Born with it
Acquired immunity
Develop with exposure
Primitive natural immunity
nonspecific form of immunity
Inherited natural immunity
Not dependent on previous exposure
Natural immunity includes which cell type?
NK cells
Properdin
Plasma protein activate alternate complement pathway
Lysozyme
protein in tears, nasal secretion
Acquired immunity based on
Responses stimulated by antigens
Antigen
chemical substance elicit immune response
immunocompetance
ability to mount an appropriate immune response
Lymphocytes
bone marrow stem cells giving rise to two cell types
Lymphocytes derive into
T-lymphocytes, B-lymphocytes
T lymphocytes mature in?
thymus
B lymphocytes mature in?
Bone marrow
Primary lymphoid organs
bone marrow and thymus
Secondary lymphoid organs
spleen and lymph nodes
NK Cells functions
kill tumor and foreign cells
T Helper (CD4+) Cells funtions
help B cells produce antibodies
secrete cytokines
T suppressor (CD8+) Cell function
Supress unwanted antibody prod.
Ratio of CD4+/CD8+ ?
2:1