Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
7 Cards in this Set
- Front
- Back
|
T Lymphocytes
|
Migrate from bone marrow to thymus gland to mature & become immunocompetent, then migrate to peripheral lymphoid tissue & organs
Destroy antigen by cytoxic action or by activating B cells |
|
|
B Lymphocytes
|
Mature in bone marrow, then get carried by blood to lymph nodes, spleen and connective tissue
When activated, they differentiate into plasma cells which are specific for a particular antigen |
|
|
Natural Killer (NK) Cells
|
Attack virally infected cells & cancer cells
|
|
|
Innate Immune Response
|
Action by neutrophils, macrophages, mast cells, & NK cells
Fast & Nonspecific Does not produce memory cells Mostly in small infections & to control large infections |
|
|
Adaptive Immune Response
|
Depends on recognition of antigens by B & T cells (learning)
Slower & Specific Produces memory cells by mitosis, so that reappearance of antigen will be recognized immediately Basis for vaccinations |
|
|
Loose Lymphoid Tissue
|
-Few lymphocytes present
-For initial immune response -Found in lamina propria -No capsule -Intercepts antigen -Mucosa associated lymphoid tissue (MALT) |
|
|
Dense Lymphoid Tissue
|
-Many lymphocytes present
-Contained in meshwork -Found in walls of GIT, respiratory tract, & genitourinary tract -No capsule |
