Lecture Exam 4 Essay Question 6

Front 1

Percentage of IgG in Serum?

Back 1

80-85%

Front 2

Function of IgG?

Back 2

• Protects against viruses and bacteria by neutralizing bacterial toxins, and enhancing phagocytic cells
• Also involved in some complement reactions

Front 3

Percentage of IgM in serum?

Back 3

• 5-10%

Front 4

Function of IgM?

Back 4

• Binds to multiple antigens, forming a large clump that is easier to be removed by other cells
• also enhances phagocytic cells, and is involved in some complement reactions

Front 5

Percentage of IgA in serum?

Back 5

• 10-15%

Front 6

Function of IgA

Back 6

• Most prevalent antibody in the body
• Coats the surface of the antigen helping to prevent attachment to host tissues
• Consists of 2 forms

1. Monomer form: found in blood and lymph, less effective form
2. Dimer form: found in mucous secretions

Front 7

Percentage of IgD in serum?

Back 7

• 0.2%

Front 8

Function of IgD?

Back 8

• Not completely understood yet
• Found in blood and lymph fluid
• Not involved in complement reactions

Front 9

Percentage of IgE in serum?

Back 9

• 0.002%

Front 10

Function of IgE?

Back 10

• Binds to mast cells or basophils which are involved in allergic reactions
• Mast cells and basophils are then stimulated to release histamines which lead to allergy type symptoms