Anatomy & Physiology B/C

[Unome]

What is really the difference and description between Type I, II, III, and IV hypersensitivities? Type II and III seem very similar, while I am unsure on why Type IV is delayed. Isn't it just cell-mediated response? I have done extensive research but have not come up with satisfactory answers, especially why Type IV is delayed.

To the best of my knowledge, type II & type III are probably as similar as you think they are; I do remember that type IV was delayed, but not much. Type I is really the only one they'll ask you about in detail.

[tinywings]

What is really the difference and description between Type I, II, III, and IV hypersensitivities? Type II and III seem very similar, while I am unsure on why Type IV is delayed. Isn't it just cell-mediated response? I have done extensive research but have not come up with satisfactory answers, especially why Type IV is delayed.

To the best of my knowledge, type II & type III are probably as similar as you think they are; I do remember that type IV was delayed, but not much. Type I is really the only one they'll ask you about in detail.

Alright, sounds good, thanks!

[slytherin]

What is really the difference and description between Type I, II, III, and IV hypersensitivities? Type II and III seem very similar, while I am unsure on why Type IV is delayed. Isn't it just cell-mediated response? I have done extensive research but have not come up with satisfactory answers, especially why Type IV is delayed.

To the best of my knowledge, type II & type III are probably as similar as you think they are; I do remember that type IV was delayed, but not much. Type I is really the only one they'll ask you about in detail.

Alright, sounds good, thanks!

Please tell me this has something to do with C division only because I have no idea what any of this means so if this has something to do with division B can someone explain more in depth what this means?

[Unome]

To the best of my knowledge, type II & type III are probably as similar as you think they are; I do remember that type IV was delayed, but not much. Type I is really the only one they'll ask you about in detail.

Alright, sounds good, thanks!

Please tell me this has something to do with C division only because I have no idea what any of this means so if this has something to do with division B can someone explain more in depth what this means?

I'm learning it for Div B Nationals; as for tinywings, I have no idea.
http://en.wikipedia.org/wiki/Hypersensi ... sification

[Sciolapedia]

What diseases are you guys studying for the immune system and integumentary system? There are so many!

[Unome]

What diseases are you guys studying for the immune system and integumentary system? There are so many!

All of them (seriously though, half of my info on immune is diseases I've seen on tests)

[Bilbo McSwaggins]

What resources did you use to study for the last season? I've been using a textbook and for every section, I feel as though I would have had to read a lot of other chapters to understand the processes being discussed. (Darn, our body systems are so connected)

I usually just read a lot of textbooks and articles etc. and then I find as many tests as I can, and write down/research the stuff I didn't know or got wrong.

[Crazy Puny Man]

What is really the difference and description between Type I, II, III, and IV hypersensitivities? Type II and III seem very similar, while I am unsure on why Type IV is delayed. Isn't it just cell-mediated response? I have done extensive research but have not come up with satisfactory answers, especially why Type IV is delayed.

Type I hypersensitivities are also called immediate or anaphylactic reactions. These are the most common of the hypersensitivities. These are your typical allergic reactions- initial sensitization produces IgE antibodies which then bind to mast cells & basophils; upon subsequent exposure to the antigen, it binds to the IgE on the mast cells & stimulates the release of histamine and other cytokines that lead to inflammation and possibly anaphylactic shock.

Type II hypersensitivities occur in incompatible blood transfusions, and usually involve IgG and IgM antibodies that are directed against antigens on blood cells. Type III also involve more antigen-antibody complexes but these complexes often escape phagocytosis and get lodged within vascular walls and tissues (e.g. blood vessels). Exmaples of type III include glomerulonephritis and rheumatoid arthritis.

Type IV primarily involves helper and/or cytotoxic T cells. I would imagine these are delayed simply because T cells often take a while to mount a full-on primary immune response, but I'm not entirely certain about that.

Does this help?

[slytherin]

Hey everyone, my State competition is this Saturday (on the 4th) and I was wondering if anyone had any last minute tips for studying or anything at all. All help would be appreciated. Thanks in advance.

[GoofyFoofer]

Hey everyone, my State competition is this Saturday (on teh 4th) and I was wondering if anyone had any last minute tips for studying or anything at all. All help would be appreciated. Thanks in advance.

Yeah. (I have state on saturday, too, but for SoCal)

At this point, studying probably won't be too effective (except for some final review, editing of notes, etc.).
As for the day before the competition, I would suggest, like, healthy food, some excercise, and good sleep.
Good luck!