immunity p1

Question 1

IgG

Answer 1

most plentiful (greatest concentration); crosses the placenta, most common
(Goo Goo Ga Ga)

Question 2

IgA

Answer 2

“secretory IgA”; defends mucous membranes, people who don’t have IgA will have a history of infections
(AirwAy secretions, sAlivA, teArs, breAst milk, etc.)

Question 3

IgM

Answer 3

1. first antibody in the blood in response to infection (when you’re sick, iMMediately go to your MoM first)
2. doesn’t hang around
3. Can be used as a marker to keep the progress of infection
   - IgM in the blood means current infection

Question 4

IgD

Answer 4

1. not found alone, helps B cells Differentiate into plasma cells to make antibodies
2. always attached to the B cell
3. warns the B cell that the antigen is in the blood
4. indicators/ monitors of the B cell.

Question 5

IgE

Answer 5

1. involved in allergic reactions
2. defend against parasites.
   (Extiguishes nasy worms– Eww