White Blood Corpuscles

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Leucocytes White Blood Cells

Basar

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White Blood cells are also known as Leucocytes as they are colorless due to lack of Haemoglobin.

There are about 6000-8000mm of WBC for 1ml of blood.

These are also called Scavengers & Microscopic policemen

White Blood Corpuscles

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WBC’s

Five Types

Classified according to the presence or absence of granules and the staining characteristics of their cytoplasm.

Leucocytes appear brightly colored in stained preparations, they have a nuclei and are generally larger in size than RBC’s.

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Type of WBC’s

Granulocytes—have large granules in their cytoplasm

Neutrophils

Eosinophils

Basophils

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Types of WBC’s

Agranulocytes—do not have granules in their cytoplasm

Lymphocytes

Monocytes

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Granuloctyes

Neutrophils

Stain light purple with neutral dyes

Granules are small and numerous—course appearance

Several lobes in nucleus

65% of WBC count

Highly mobile/very active

Diapedesis—Can leave blood vessels and enter tissue space

Phagocytosis (eater), contain several lysosomes (janitor)

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Granulocytes

Eosinophils or Acidophils:

Large, numerous granules

Nuclei with two lobes

2-5% of WBC count

Found in lining of respiratory and digestive tracts

Important functions involve protections against infections caused by parasitic worms and involvement in allergic reactions

Secrete anti-inflammatory substances in allergic reactions

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Basophils

Least numerous--.5-1%

Diapedesis—Can leave blood vessels and enter tissue space