Erythrocytes and Leukocytes Quiz

Neutrophils (granulocyte)

• 2-5 lobes

• distinct granules

• phagocytize pathogens

• 50-70% of WBC

Eosinophils (granulocyte)

• bilobed/2 lobes

• reddish, pink-orange granules 

• phagocytize antigen-antibody complexes and allergens 

• destroy parasitic worms 

• 1-4% of WBC 

Basophil (granulocyte)

• bilobed/2 lobes

• deep blue/violet granules when stained

• histamine, heparin, inflammatory or allergic reactions

• 0.5-1% of WBC

Lymphocytes (agranulocytes)

• nucleus fills up the small lymphocytes

• dark nucleus

• thin rim of cytoplasm

• attacks pathogens

• produce antibodies

• 20-40% of RBC

Monocytes (agranulocyte)

• kidney-shaped or C shaped nucleus 

• nucleus pale staining 

• lots of cytoplasm 

• can exit blood vessels 

• 2-8% of RBC 

Plasma

55% of whole blood

Buffy Coat: Leukocytes and platelets

1% of whole blood

Erythrocytes

44% of whole blood