3.5 Non-Specific Body Defences Flashcards
1
Q
Name some examples of physical protections
A
Closely packed epithelial cells, cough/sneeze reflex, cilia
2
Q
Name some chemical protections
A
Stomach acid, tears, saliva and mucus
3
Q
Which cells mediate the inflammatory response?
A
Mast Cells
4
Q
Which substance do mast cells secrete?
A
Histamine
5
Q
What are 2 responses to histamine?
A
Vasodilation and increased capillary permeability
6
Q
Which specialised white blood cells is attracted to the site of infection?
A
Phagocyte
7
Q
What term describes the engulfment and destruction of pathogens?
A
Phagocytosis
8
Q
Inside which structure do phagocytes store digestive enzymes?
A
Lysosome
9
Q
Which chemical substance is secreted by phagocytes?
A
Cytokines
10
Q
What is the role of cytokines?
A
To attract more white blood cells to the site of infection
