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blood and the immune system
bio
11
Biology
10th Grade
12/11/2008

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Term
pathogen
Definition
foreign substance
Term
plasma
Definition
straw collored liquid
91% water
transport
Term
red blood cells
Definition
aka Erythrocytes
carry O2 or CO2
contains hemoglobin
3-4 month life span
comprises what % of blood? males: 45% females: 42%
Term
platelets
Definition
aka thrombocytes
part of clotting process
made of cell fragments
life span: 4-7 days
Term
thromboplastin
Definition
platelets gather at the wound site and begin the process by starting to release enzymes
Term
white blood cells
Definition
aka leukocytes
provides the bodys natural defense aginst disease
consists of 5 cell types:
Term
1. neutrophils
Definition
phagocytosis of small particles
Term
2. monocytes
Definition
(large) phagocytosis of large particles
Term
3. Lymphocytes
Definition
immune response, produce antibodies
Term
4. Eosinophils
Definition
release clot digesting enzymes
Term
5. Basophils
Definition
release anticoagulant (heparin)
release histamine (a chemical that causes inflammation)
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