Leukocytes

agranulocyte

leukocyte containing no granules

lymphocytes and monocytes

granulocyte

leukocyte containing granules

neutrophil, eosinophil, and basophil

macrophage

immune cell that engulfs foreign material and dead cells, they are outside blood vessels and are very good at killing bacteria

leukocytes function

they help fight off infections and have a lifespan of less than a day (as it commits to fighting an infection it will die with the infection. bumblebee effect)

neutrophil (granulocyte)

first line of defense when infection occurs, they kill bacteria and fungi

eosinophil (granulocyte)

specialized to attack and kill parasites or destroy cancer cells

basophil (granulocyte)

help control body’s immune response by secreting histamine and heparin (histamine is a vasodilator and heparin is an anticoagulant)

lymphocyte (agranulocyte)

create antibodies to defend against a wide array of infections including bacteria, viruses and other invaders

monocytes (agranulocyte)

they are specialized at breaking down bacteria