There are 5 basic types of WBCs (leukocytes). Name each type of WBC, give a prominent physical characteristic, explain what its main function is, and indicate if it phagocytizes.
1. neutrophils: nucleus is multi lobed, function is to phagocytize bacteria
2. eosinophils: nucleus is bilobed, red cytoplasm granules, function is to kill parasitic worms and has a complex role in allergy and asthma, it does phagocytize
3. basophils: nucleus is bilobed, large purple/black granules, function is to release histamine and other mediators of inflammation, contains heparin (an anticoagulant), acts as a vasodilator and attracts other WBCs to inflamed sites, does not phagocytize
4. lymphocytes: nucleus is spherical or indented, pale blue cytoplasm, function is to mount immune responses by direct cell attack or via antibodies,does not phagocytize
5. monocytes: nucleus U or kidney shaped, grey, blue cytoplasm, function is phagocytosis-develop into macrophages in the tissues, does phagocytize