Biol 130 Human Biology Immune and
Lymphatic System Questions and Answers
Pathogen - ✅✅a bacterium, virus, or other particle that can cause disease.
innate immunity - ✅✅physical barriers, and chemical and cellular defenses against any pathogen, i.e.
not specific to a particular pathogen
second line of defense - ✅✅part of innate immunity; protective cells and fluids; inflammation and
phagocytosis - nonspecific
macrophage phagocytosis - ✅✅Large white blood cell that engulfs bacteria, foreign particles, and
dead cells in a process called phagocytosis
mast cells - ✅✅Cells that release chemicals (such as histamine) that promote inflammation.
Cytokines - ✅✅Chemicals released by the immune system to coordinate the immune response
Interferons - ✅✅produced by virally infected cells to stop viral replication within non infected cells
inflammation response - ✅✅used in dealing with infection or tissue damage, four cardinal signs: heat,
redness, pain, swelling
neutrophil - ✅✅most common white blood cell, with macrophages, phagocytoses pathogens. first
onsite to an infection
natural killer (NK) cells - ✅✅These cells kill cancer cells and cells infected with viruses. They bind to
their targets and deliver a lethal burst of chemicals to produce holes in the target cell's membrane
leading to its destruction.
Lymphatic System Questions and Answers
Pathogen - ✅✅a bacterium, virus, or other particle that can cause disease.
innate immunity - ✅✅physical barriers, and chemical and cellular defenses against any pathogen, i.e.
not specific to a particular pathogen
second line of defense - ✅✅part of innate immunity; protective cells and fluids; inflammation and
phagocytosis - nonspecific
macrophage phagocytosis - ✅✅Large white blood cell that engulfs bacteria, foreign particles, and
dead cells in a process called phagocytosis
mast cells - ✅✅Cells that release chemicals (such as histamine) that promote inflammation.
Cytokines - ✅✅Chemicals released by the immune system to coordinate the immune response
Interferons - ✅✅produced by virally infected cells to stop viral replication within non infected cells
inflammation response - ✅✅used in dealing with infection or tissue damage, four cardinal signs: heat,
redness, pain, swelling
neutrophil - ✅✅most common white blood cell, with macrophages, phagocytoses pathogens. first
onsite to an infection
natural killer (NK) cells - ✅✅These cells kill cancer cells and cells infected with viruses. They bind to
their targets and deliver a lethal burst of chemicals to produce holes in the target cell's membrane
leading to its destruction.
