Transcript powerpoint

White Blood Cells
What do they do?
 Play a large role in the immune system
 Fight disease and infection
 Creating antibodies
 Phagocytosis
 Doctors can use the amount of white
blood cells to determine if our body is
fighting an infection.
Make a table
Neutrophils
Abundance
Granules?
Role
Other
Eosinophils
Basophils
Monocyte
Lymphocyte
5 Types
 2 main categories:
 Granulocytes = contain granules
 Neutrophils, Eosinophils, Basophils
 Agranulocytes = do not contain granules
 Monocytes, Lymphocytes
Neutrophils
 Most abundant: 40-75%
 Kill off bacteria
 One of the first cells to travel to site of
inflammation
 Main cell in “Pus”
Eosinophils
 1-6% of cells
 Kill off multicellular parasites
 Involved in control of allergies and asthma
 Presence in lungs, skin, and esophagus is a
sign of disease
Basophils
 Least common 0.01-0.3%
 Contain histamine and heparin (an anticoagulant).
Help to bring blood to the site of injury to promote
healing.
 May contribute to the severity of allergic reactions.
Monocytes
 BIG!
 2-10%
 Travel to site of infection where they
differentiate into MACROPHAGES
 Elicit a immune response by presenting
antigens
Lymphocyte
 Immune system: T-cells and B-cells
 More on these later!!
Ejection of debris by exocytosis
 https://www.youtube.com/watch?v=UKwwvIaR9aI
 https://www.youtube.com/watch?v=r4-g6tVyUAU
 https://www.youtube.com/watch?v=aWItglvTiLc