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BIOS267 Pathopharmacology Diseases Make Themselves DeVry University

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DeVry University

BIOS267 Pathopharmacology DU

Running Head Homework: Week 1
Diseases make themselves known by the presence of signs and symptoms. Explain the
differences between signs and symptoms and give two examples of each.
A symptom is any subjective evidence of disease, Example anxiety and low back pain
sign is objective, Example rash and high blood pressure.
What is the difference between an etiology and a risk factor? Give one example of each.
Etiology is the underline reason/cause of a disease. Example bubonic plague is caused by
A risk factor is any attribute, characteristic or exposure of an individual that increases the
likelihood of developing a disease or injury. Example tobacco and alcohol consumption.
What are the four signs of inflammation, and what is the cause of each sign?
Redness is caused by small blood vessels in the area of injury dilate,
Heat release of vasoactive chemicals increasing blood flow to that area, lymphocytes are
released by the immune system to produce antibodies to destroy the pathogen and phagocytes to
ingest the dead bacteria.
Swelling, called edema, accumulation of fluid outside the blood vessels.
Pain is partly by distortion of tissues caused by edema, and certain chemical mediators of
inflammation, such as bradykinin, serotonin, and the prostaglandins.
Is every inflammation the result of an infection? Give an example to support your answer
No, acute inflammation can be from a tissue injury and is one that starts rapidly and becomes
severe in a short space of time and may last a few days to a few weeks.


BIOS267 Pathopharmacology Diseases Make Themselves DeVry University

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