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Difficulty: HardHuman Physiology, Health, and Diseases

Match the blood cell types listed in List-I with their primary physiological functions listed in List-II:

  • NeutrophilsRapid phagocytosis of invading bacterial pathogens as the predominant cellular responders
  • EosinophilsDefense against multicellular parasitic infections and modulation of allergic responses
  • BasophilsRelease of histamine and heparin during inflammatory and hypersensitivity reactions
  • Plasma CellsSecretion of specific immunoglobulins (antibodies) for humoral immune defense

Answer

Neutrophils pair with rapid phagocytosis of bacterial pathogens; Eosinophils pair with defense against multicellular parasites and modulation of allergic responses; Basophils pair with release of histamine and heparin during inflammatory reactions; Plasma cells pair with secretion of specific antibodies for humoral immunity.
Each leukocyte type possesses distinct morphological features and physiological responsibilities: Neutrophils act primarily as rapid bacterial phagocytes, Eosinophils combat parasitic infections and modulate allergic mediators, Basophils secrete histamine and heparin during inflammatory cascades, and Plasma cells produce circulating antibodies responsible for adaptive humoral immunity.

Step-by-Step Solution

1
Analyze the physiological function of Neutrophils.
Neutrophils are granulocytes specialized in acute bacterial phagocytosis.
They are the most abundant white blood cells and arrive first at infection sites.
2
Analyze the functional role of Eosinophils.
Eosinophils target parasitic organisms and regulate histamine levels.
Their granules contain major basic protein and histaminase targeting helminths and allergic reactions.
3
Analyze the functional role of Basophils.
Basophils mediate inflammatory responses through histamine and heparin release.
They share functional similarities with tissue mast cells in hypersensitivity pathways.
4
Analyze the functional role of Plasma Cells.
Plasma cells secrete immunoglobulins (antibodies).
They derive from activated B lymphocytes and drive humoral adaptive immunity.

Key Concept

Leukocyte Functional Specialization in Human Immune Physiology
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Topics

Human Physiology, Health, and Diseases

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