1
Q
what does perforin do?
A
released by t killer cells and destroys cell walls
2
Q
when do t helper cells become active?
A
when CD4 binds to specific antigen on APC (antigen presenting cell)
-clonal selection (t helper and memory)
3
Q
what cells release perforin?
A
t killer cells
4
Q
how are b cells activated and what do they do?
A
- activated by t helpers
- release cytokines
- form plasma and memory cells
5
Q
give four features of adaptive immunity
A
- arise from MO exposure
- specific to pathogen
- enhanced by second exposure
- acquires memory
6
Q
what is the role of cytokines?
A
promotes differentiation and proliferation (rapid increase) of lymphocytes
ToB
flashcards
Decks in class (15)
# Cards
-
Session 1-microscopy,Epithelium,biopsy and staining techniques31
-
Session 2-Glands, their properties and secretion methods29
-
session 3-cell ultrastructure and organelles31
-
endocrine, exocrine or both?12
-
Session 4-bacteria, viruses and DNA/RNA envelopes17
-
Bacteria and their causes,antibiotics26
-
Session 5-connective Tissue,cell roles,fibres,clinical diseases,cartilage, ossification and bone37
-
session 6-skin and clinical disease28
-
session 7-ossification and bone disease20
-
session 8-muscle,contraction,structure,disease38
-
session 9-nerves21
-
session 10-Innate immunity14
-
session 10-adaptive immunity6
-
session 11-blood cells and haemopoiesis13
-
Cilinical Conditions19
