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Two first barriers to hinder microbial invasion.
In an inflammatory response vasculature refers to what three blood vessels?
List 4 most important chemicals released by damaged cells.
Clear watery fluid
What are the components of pus?
Dead tissue cells and dead leukocytes
What are pyrogens?
Chemicals that trigger the hypothalmus to raise body temperature.
Describe exogenous and endogenous infections and give examples for each.
Exogenous infections occur from sources outside of the body. Spores entering an open wound.
Endogenous infections occur from bacteria already present in the body. Yeast infection.
Describe three benefits of fever
Decreases binary fission
Increases production of white blood cells
Decreases availability of iron (Fe)
Why and how do chills accompany fever?
Through vasoconstriction and mild muscle contractions.
What is an antipyretic? Give two examples.
Drugs that reduce fever. Ibuprofen and aspirin
List the general activities of phagocytes
Eating unwanted materials.
Define the term diapedesis.
Process whereby leukocytes leave intact blood vessels by squeezing between lining cells, phagocytize bacteria, re-enter the blood vessels and then return to the liver to be recycled.
What are interferons?
Special proteins that will attack viruses.
What are defensins?
New group of specialized proteins that defend against bacterial infection.
Physiologically, how does a fever occur?
Pyrogen sets the hypothalamus to a higher temperature. Vasoconstriction occurs to hold in heat. And mild muscle contractions occur creating more heat.
Inflammatory response questions