MBI 131 Lecture Notes - Lecture 5: Protozoa, Appendicitis, Infection
15 Sep 2016
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Document Summary
Normal body functions are disrupted resulting in observable symptoms. Infectious (communicable) disease is caused by pathogens: these are often microbes. Non communicable disease results from physiological changes: diabetes: too much sugar in the blood, cancer: damage to dna disrupts cell growth. Disease can also result from injury or disability: car accidents, cerebral palsy from birth trauma. Disease classification: acute v chronic, communicable v non communicable. Acute diseases: develop quickly and last a short time (3 months or less, patient is cured by medical intervention, recovers due to immune system function, or dies, many infectious diseases are acute. Chronic diseases: develop slowly and are long lasting (3 months or longer, some are life-long, medical intervention often manages the disease, extending life by limiting the disease"s effects on the body. Epidemiology: the study of the occurrence of disease in a population (community) Study how, when, and where diseases occur in populations.
