How can we help?
You can also find more resources in our
Select a category
Something is confusing
Something is broken
I have a suggestion
What is your email?
What is 1 + 3?
Science Section A 2.3
caused by harmful organisms or viruses
occur when a body system does not function properly
your bodies 3rd line of defense/ fights harmful agents of diesease
the structure & function of cells
common causes of an infectious disease
bacteria & some types of fungi
what is protzoa carried by mosquitos called?
transmitted by water that has been contaminated by human or animal waste products
common causes of infectious disease
some examples of viral diseases
colds, the flu, and the chicken poxs
causes many non-infectious diseases
ticks carry the spirochete bachteria that cause this diesease
this artery is almost intirely blocked by plaque, a mixture of fatty substances that sticks to the artery wall. Eating a healthy diet reduces the incidence of plaque.
causes cells to divide rapidly and incorrectly.
your bodies 3 lines of defense
1) physical &chemical barriers- skin,tears,saliva,earwax, mucas 2)processes that kick in should harmfulagents enter- like getting cut/inflammation/phagocytes 3) immune system
cells that surround and consume harmful disease agents that invade ur body/ one type of white blood cell
certain types of white blood cells that produce special proteins that fight invaders