Ch. 13 Flashcards
The ability of the body to react with countless foreign substances, develops _____
immunocompetence
Molecules that stimulate a response by B and T Cells are known as _____
Antigens or Immunogens
The primary signal that a molecule is foreign
epitope
Two features that most characterize the third line of defense
specificity and memory
3 main functional types of T-cells
- Helper
- Regulatory
- Cytotoxic
The CD4 co-receptor is found on the surface of what cell type?
T Helper Cells
The CD8 co-receptor is found on the surface of what cell type?
Cytotoxic
A large protein molecule produced by plasma cells that interacts specifically with an antigen
immunoglobulin
B cells have surface receptors that bind _____
antigens
The concentration of antibodies in serum is expressed as _____
titer
superantigens
potent stimulators of T-cells, responsible for diseases such as toxic shock
The antibody region that does not bind the antigen is known as the ________ region
crystillizable
T helper 2 cells have the following functions
Drives B cell proliferation
Secrete cytokines
Most vaccines are administered via which 3 routes
Subcutaneous, Intramuscular, or Intradermal Injection
___ cell activation is triggered by the binding of antigen to surface IgD molecules
B
Mature T cells can constantly travel throughout the body via the _____ and _______ systems
Lymphatic and Cardiovascular
The first time a host encounters an antigen, _____ specific immune response is activated
Primary
The first antibody produced by the body in primary response
IgM
The differentiated B cells that produce and secrete large amounts of antibodies are called _____ cells.
Plasma
Secretory IgA coats the surface of mucous membranes and is found in:
Tears, Colostrum, Saliva, and Mucus
