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18 Cards in this Set

  • Front
  • Back
Identify the structures of and interpret the functions of the immune system.
structures: lymphatic vessels, lymph nodes, tonsils, thymus gland, spleen, bone marrow, and appendix; functions: providing protection against foreign material, including pathogens, and bathing the tissue with lymph fluid
Explain the difference between innate immunity and acquired immune responses.
Innate immunity is a non-specific immunity that you are born with; acquired immunity is against a specific pathogen, which must be developed after exposure to the pathogen.
What role do phagocytes play in defending the body against disease?
Phagocytes are white blood cells that ingest and destroy pathogens by surrounding and engulfing them
What role does a lymph node play in defending your body against microorganisms?
A lymph node is a small mass of tissue that filters lymph and traps and destroys microorganisms.
Why is it adaptive for memory cells to remain in the immune system after an invasion by pathogens?
Memory cells remain in case the body encounters the same antigen again. The second response will be rapid, before the antigen is able to cause disease
body's earliest lines of nonspecific defense against any and all pathogens; includes skin and body secretions, inflammation of body tissues, and phagocytosis of pathogens.
innate immunity
white blood cells that destroy pathogens by surrounding and engulfing them; include macrophages, neutrophils, monocytes, and eosinophils.
type of phagocyte that engulfs damaged cells or pathogens that have entered the body's tissues;
"big eater"
collection of dead macrophages and body fluids that forms in infected tissues
host-cell specific proteins that protect cells from viruses.
gradual build-up of resistance to a specific pathogen over time.
acquired immunity
fluid that bathes the cells of the body; formed when water and dissolved substances diffuse from the blood into the spaces between the cells that make up the surrounding tissues
tissue fluid
tissue fluids composed of water and dissolved substances from the blood that have collected and entered the lymph vessels.
small mass of tissue that contains lymphocytes and filters pathogens from the lymph; made of a network of connective tissue fibers that contain lymphocytes.
lymph node
type of white blood cell stored in lymph nodes that defends the body against foreign agents.
lymphocyte produced in bone marrow and processed in the thymus that plays a role in immunity; includes helper T cells and killer T cells.
a lymphocyte that, when activated by a T cell, becomes a plasma cell and produces antibodies
substance consisting of weakened, dead, or incomplete portions of pathogens or antigens that produce an immune response when injected into the body.