Basic Pathophysiology Flashcards
Define: disease
Disease is a structural or functional change in the body that is harmful to the organism.
Disease occurs when the cells environment changes to such a degree that tissues are no longer able to perform the function optimally.
Define: pathology
Pathology is the study of disease.
Pathology is also the name of one of the specialities of medicine, one that deals with analysis body fluids and tissues for diagnostic purposes and with teaching and research relating to fundamental aspects of disease.
Define: pathophysiology
the disordered physiological processes associated with disease or injury.
Describe the types of diseases: structural
Structural diseases, organic diseases, are characterised by structural changes within the body. Structural changes are called lesions.
There are three major categories of structural disease:
Genetic and developmental diseases.
Degenerative and inflammatory diseases and trauma.
Hyperplasias and neoplasms.
Describe the types of diseases: functional
Disease with no visible lesions, At least at the onset of the disease.
The basic change is physiologic.
Lesions
Structural changes within the body caused by disease
Genetic diseases
Genetic diseases are caused by abnormalities in the genetic make up of the individual, either:
At the level of chromosomes, such as increased chromosome numbers or translocations.
At the genetic level, such as mutations.
Developmental diseases
Developmental diseases are ones that originated during embryonic and fetal development