Types of Immunoglobulins Flashcards

Study Notes

Types of Immunoglobulins

IgG
- Main antibody in the secondary immune response
- Provides antiviral, antitoxin, and antibacterial protection
- Crucial for newborn immunity, crossing the placenta
- Activates the complement system and enhances macrophage function
IgA
- The most abundant immunoglobulin in mucosal areas
- Present in body secretions such as tears, saliva, and breast milk
- Plays a key role in protecting mucous membranes from pathogens
IgM
- The first antibody produced during the initial exposure to an antigen
- Acts as a natural antibody involved in early immune responses
- Efficiently activates the complement system
IgD
- Found primarily on the surface of B lymphocytes
- Plays a role in the maturation and differentiation of B cells
- Functions as a receptor for antigens on B cells
IgE
- Associated with allergic reactions and hypersensitivity responses
- Binds to mast cells and basophils, triggering release of histamine
- Involved in defense against parasitic infections

Description

Explore the different types of immunoglobulins with these flashcards. Each card provides a definition and function of various classes such as IgG, IgA, and IgM, helping you understand their roles in the immune system. Perfect for students studying immunology!