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30 Cards in this Set
- Front
- Back
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Give an example of naturally acquired passive immunity
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Maternal antibodies crossing the placenta to protect the fetus
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Name three lymphoid organs
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Lymph nodes, spleen, appendix, tonsils, adenoids, thymus, bone marrow, lymphatic vessels, Peyer's patches
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Define immunity
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Protection
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Humoral immunity is mediated by ________
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Antibodies
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Give an example of artificially acquired passive immunity
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Transferring lymphocytes and antibodies into a person that is immunocompromised
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What three ways can complement aid in immunological functions?
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Lysing cell membranes, opsonization, stimulating inflammation
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What is the main function of B lymphocytes?
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To produce antibodies
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What antibody class is found in body fluids?
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IgA
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What type of vaccine is created for a large antigen that has many different epitopes?
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Subunit
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What is chemotaxis?
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Recruitment of immune system components to the site of infection
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Define variolation
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Intentionally infecting someone with smallpox to elicit an immune response
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Give an example of a naturally acquired active immunity
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Infection or illness
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What is the primary function of helper T cells?
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To assist other immune system components
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What are the signs of inflammation?
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Redness, heat, pain, swelling, loss of function
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What is the main way that people artificially acquire active immunity?
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Vaccinations
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What type of vaccine does not require a booster shot and why?
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Live, because a weakened but live version of the antigen is introduced, forcing the body to actively fight it
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Define apoptosis
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Programmed cell death
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What is a cytokine?
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Chemical messenger
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What do antigen-presenting cells do?
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Present antigens to lymphocytes
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What antibody type is increased in parasitic infections?
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IgE
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What is an interferon?
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Cytokine that interferes with viral replication
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What type of vaccine introduces a dead antigen into the body and requires booster shots?
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Inactivated
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What components are introduced in active immunity?
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Antigens
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Which antibody class is the largest and activates complement the best?
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IgM
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Leukocytes are able to leave circulation and travel to sites of infection through a process known as:
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Diapedesis
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Which components are introduced into the body in passive immunity?
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Immune system components--T lymphs and antibodies
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Which antibody class is capable of crossing the placenta?
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IgG
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Who created the first vaccine?
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Edward Jenner
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Define inflammation.
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The accumulation of leukocytes at the site of infection
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Define homeostasis.
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State of balance
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