The immune system Flashcards
1
Q
How is an immune response triggered?
A
Microbes get passed first line of defence and invade tissues
2
Q
What is the next line of defence?
A
White blood cells?
3
Q
What happens when microbes invade?
A
Number of wbc increases
4
Q
What do the tissues do?
A
Swell and bring more blood to the infection site
5
Q
Where are there huge numbers of microbes?
A
Air, water, soil
