wbcs

• total leucocyte count is

  6000-8000
• most abundant WBC

  neutrophils
• neutrophil %

  60-65 %
• function of neutrophils is phagocytosis
• neutrophils are

  pentalobular
• neutrophils can be dyed with

  acidic and basic dyes
• least abundant WBC

  basophils
• basophil %

  0.5-1 %
• function of basophils

  secretes heparin, histamine, serotonin and involved in inflammatory reactions
• shape and nucleus of a basophil

  s- shape

  2-3 lobes
• basophils can be dyed with

  methylene blue dye
• eosinophils %

  2-3 %
• function of eosinophils

  involved in allergic reactions and resist infections

  release histaminase and destructive enzymes
• nucleus of eosinophil

  bilobed
• eosinophils can be dyed with

  eosin dye
• largest WBC

  monocytes
• monocytes %

  6-8 %
• function of monocytes

  phagocytosis
• nucleus of monocytes is

  kidney shaped
• smallest WBC

  lymphocytes
• lymphocytes %

  20-25 %
• T lymphocytes are

  macrophages and mature in the thymus
• B lymphocytes 


  produce and transport antibodies
• nucleus of lymphocytes is

  large and spherical
• increase in TLC results in

  leucocytosis
• abnormal increase in TLC results in

  leukemia
• decrease in TLC results in

  leucocytopenia