barriers? (1 Viewer)

[04er]

"identify..." dot points from 'the search for better health'

hey ppls for the dot points:

identify defence barriers to prevent entry of pathogens in humans:
-skin
-mucous membranes
-cilia
-chemical barriers
-other body secretions


identify defence adaptations, including:
-inflammation response
-phagocytosis
-lymph system
-cell death to seal off pathogen


identify the components of the immune response:
- antibodies
- T cells
- B cells


notice how they all say 'identify' - doesn't that mean we simply need to be able to identify them? and not describe them in full detail?

What do you guys think?

 

[xiao1985]

at least know wut they are and how they work... u need those info to bab on in somthing else too... so doesn't hurt...

 

[babydoll_]

yeah, well the dotpoint says 'identify', which means you just have to be able to name them

but as xiao said, knowing the basics about how they work wouldn't hurt

 

[Mendo]

Im not sure if its on a different dot point, i think it is actually. Theres the whole Helper T cells, Killer T cells, natural killers, macrophages and all that jazz and how they interact. I know there's more, just naming some. yeah.

 

[Tommy_Lamp]

You need to have a rough description of what they do.
For example:
Skin: When unbroken, skin prevents the entry of pathogens. Pores in the skin secrete substances that kill bacteria.
Cilia: Move with a wavelike motion to push pathogens from the lungs up to the throat.
Mucous Membrane: Mucus is sticky and traps pathogens and other particles. When there are many pathogens more mucus is produced to flush them out.
Chemical Barriers: Stomach acid destroys pathogens, including those that are carried to the throat by cilia and then swallowed. Alkali destroys acid resistant pathogens.

There is another thread where I have outlined what you need to know for the third line of defence.

 

[Dragana]

even though it says identify..its better to hav a good knowledge of it cos they can throw in 8 marks questions since u can use a lot of examples for each, especially for the first defence barrier question