MICR 3230 Midterm Exam

MICR 3230 Midterm Exam
What is immunity?
The state of protection against foreign pathogens or substances (antigens)
How do you generate immunity without disease?
Immunization
What does immunization do?
Prepares the immune system for eradication of the antigen
What is herd immunity?
Vaccination/protection of a critical mass of people
What is humoral immunity?
Combats pathogens via antibodies
What are antibodies produced by?
B cells
2 types of humoral immunity:
Passive & active
What is cell-mediated immunity mediated by?
T lymphocytes
How does cell-mediated immunity work?
Eradicates pathogens, clear infected self-cells, aid other cells in immunity
Humoral & cell-mediated immunity rely on:
Surface receptors of B and T cells
Receptors are randomly generated by:
Gene segment rearrangements in the cells
B cells that encounter antigen produce:
Specific antibodies
T cells:
Bind antigens/specific peptides presented by APCs
General gist of humoral immunity