AND ANSWERS
Immune System (IS) - ANS Tissues, cells and biological mediators that work together
defending or protecting host organism from foreign substances and abnormal cells
Immunity - ANS Process by which a host organism protects itself from attacks by external
and internal agents
Acquired immunity - ANS Formation of specific antigen-antibody and specific responses
Self - ANS Anything that is derived from the host
Nonself - ANS Anything physically outside the host
What are the major components of the vertebrate immune system? - ANS Cellular and
humoral immunity
Cellular immunity - ANS Mediated by various IS cells
Cytokines - ANS Protein or peptide molecules function as powerful mediators of immune
system
Lymphokines - ANS Produced by lymphocytes
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, Monokines - ANS Monocytes and macrophages
Chemokines - ANS Attractant molecules that interact between cells and complement
proteins and are important in destroying pathogens
Phagocytes - ANS Complex molecular structures on surface of invading cells or in secretions
and fluids of the host body
Humoral immunity - ANS Fluid parts of IS
What is the most important part of humoral immunity? - ANS Antibody
What are antibodies also called? - ANS Immunoglobulins
What are the two major parts of Immune System? - ANS Innate and Adaptive (Acquired)
immunity
Innate immunity - ANS Nonspecific IS
- immediate line of immune defense
- present at birth
- external
- no modifications needed
What cells are of the innate immune system? - ANS Phagocytic leukocytes and natural killer
cells
What are the two major phagocytic cells? - ANS Polymorphonuclear cells
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