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Chapter 15 Lecture 2 (types of white blood cells (granulocytes, basophils,…
Chapter 15 Lecture 2
types of white blood cells
granulocytes
basophils
eosinophils
neutrophils
agranulocytes
lymphocytes
monocytes
phagocytic cells
second line of defense
operates when pathogens penetrate through skin
has no barriers
made of cells, antimicrobial chemicals and processes
many of these are contained or originate in blood
Formed elements
leukocytes
white blood cells
defends body against invaders
platelets
pieces of large cells called megakaryocytes
blood clotting
erythrocytes
red blood cells
carry oxygen
lab analysis of leukocytes
increased percentage of eosinophils can indicate allergies or parasitic infection
viral infection is increase in lymphocytes
bacterial disease- increase in leukocytes and neutrophils
defense components of blood
plasma
mostly water
electrolytes, dissolved gasses, protein
serum
fluid that remains when clotting factors are taken away; contains iron binding compounds
Macrophages
wandering macrophages leave the blood and perform a scavenger function traveling through the body
alveolar macrophages of the lungs