Cells of the Immune System: Granulocytes definitions Flashcards
Cells of the Immune System: Granulocytes definitions
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Granulocytes
White blood cells with visible cytoplasmic granules, part of the innate immune system.Neutrophils
Most abundant leukocytes, first responders to infection, using phagocytosis and degranulation.Eosinophils
Granulocytes targeting parasitic worms, involved in allergic reactions, with reddish-staining granules.Basophils
Granulocytes releasing histamine to promote inflammation, with bluish-purple staining granules.Leukocytes
White blood cells, including granulocytes, crucial for immune defense.Phagocytosis
Process of ingesting and digesting microbes or particles by cells like neutrophils.Degranulation
Release of granule contents from cells like neutrophils to combat pathogens.Histamine
Molecule released by basophils and mast cells, increasing capillary permeability during inflammation.Polymorphonuclear
Refers to cells like neutrophils with a multi-lobed nucleus.Antimicrobial peptides
Compounds in neutrophil granules that degrade and destroy microbes.Neutrophil Extracellular Traps (NETs)
Webs of chromatin released by neutrophils to trap and neutralize microbes.Capillary permeability
The ease with which substances can pass through capillary walls, increased by histamine.Mast cells
Tissue-resident cells similar to basophils, releasing histamine during allergic reactions.Cytoplasmic granules
Structures in granulocytes containing compounds for immune defense, visible under a microscope.Innate immune system
The body's first line of defense, including cells like granulocytes.