Pathology – the study of disease

Disease – a pathological condition of a part, organ, or system of an organism resulting from various causes, such as infection, genetic defect, or environmental stress, and characterized by an identifiable group of signs or symptoms

William Harvey – an Englishman who theorized that blood circulates in the 1600’s

William Jenner -   developed a smallpox vaccine in the 1700’s from cowpox 9preventative based on some form of the disease)

Pastuer, Lister, Koch – all dealt with the bacterial origin of disease in the 1800’s

Roentgen – discovered x-rays in 1895

Clara Barton and Florence Nightingale – nurses during the Cival War and Crimean War that led to advancements in aftercare.

Dr. Earlic – physician in the 1900’s that developed a drug to treat syphilis (first time a drug targeted a specific disease)

Alexander Fleming – discovered penicillin in 1900’s

Inflammation – a localized protective reaction of tissue to irritation, injury, or infection, characterized by pain, redness, swelling, heat, or loss of function.

Allergy – an overresponse to an irritant

Leukocytosis – a raise in WBC’s in the blood.

Granulomatous Chronic inflammation – forms dense lesions that are often mistaken for tumors.   3 types are sypillis, leprosy, tuberculosis.

Adhesions – a fibrous band of scar tissue that binds together normally separated anatomical structures.

Exudation – discharge of fluids.

Suppuration – the formation or discharge of pus from a wound.

Abcess – sacs filled with pus.

Sinus – track formed by the body to release infected material (except in the mucous membranes then it would be called a fistula)