Chapter 1 - Introduction to Pathophysiology Flashcards
acute onset
in the context of pathophysiology, a disease that appears suddenly and obviously
anaplasia
the loss of structural differentiation within a cell or group of cells; often seen in malignant tumors
apoptosis
the death of cells which occurs as a normal and controlled part of an organism’s growth or development
biopsy
a sample of tissue taken from the body in order to examine it more closely
caseous necrosis
a form of coagulation necrosis in which a thick, yellowish, “cheesy” substance forms (such a thing is often seen in tuberculosis)
cause-and-effect pathophysiology
a reference to the fact that many disorders affecting a particular system or organ display a set of common signs and symptoms directly related to that organ’s normal structure and function. (e.g. when the liver is damaged, many clotting factors cannot be produced; therefore excessive bleeding results. Jaundice, a yellow color in the skin, is another sign of liver disease, resulting from the liver’s inability to excrete bilirubin)
clinical disease
a disease that has signs and symptoms that can be recognized by clinical tests
coagulative necrosis
the process that occurs when the cell proteins are altered or denatured (similar to the coagulation that occurs when cooking eggs), and the cells retain some type of form for a time after death. This process typically occurs in a myocardial infarction (heart attack) when a lack of oxygen causes cell death
communicable diseases
infections that can be spread from one person to another
complications
new secondary or additional problems that arise after the original disease begins (e.g. following a heart attack, a person may develop congestive heart failure, a complication)
convalescence
the gradual recovery of health and strength after illness; also called rehabilitation
diagnosis
the identification of a specific disease through evaluation of signs and symptoms, laboratory tests, or other tools. More than one factor is usually required to verify a diagnosis.
diagnostic tests
laboratory tests that assist in the diagnosis of a specific disease
disease
a deviation from the normal structure or function of any part, organ, system (or combination of these), or from a state of wellness
dry gangrene
gangrene caused by coagulative necrosis in which the tissue dries, shrinks, and blackens
dysplasia
a term for what occurs when cells in a tissue are of different shapes and sizes; can be a sign of chronic infection or a precancerous stage
endogenous
growing or originating from within an organism
epidemic
a higher than expected number of cases of an infectious disease within a given area
epidemiology
the science of tracking the pattern or occurrence of disease
etiology
the cause of a disease or abnormal condition; also used to mean the study of the causes of disease
evidence-based research findings
findings that result from a completed “research process in the health sciences”; from this point, the medical community will review it to see if it becomes a standard practice
exacerbation
a worsening in the severity of the disease or in its signs/symptoms
exogenous
growing or originating from outside an organism
fat necrosis
the process that occurs when fatty tissue is broken down into fatty acids in the presence of infection or certain enzymes; these compounds may increase inflammation
gangrene
an area of necrotic tissue, usually associated with a lack or loss of blood supply that is followed by invasion of bacteria
gas gangrene
gangrene caused by the buildup of gases within tissue
hyperplasia
an increased number of cells, resulting in an enlarged tissue mass; often an initial stage in the development of cancer
hypertrophy
an increase in the size of individual cells, resulting in an enlarged tissue mass; seen often in muscle mass that increases due to exercise
hypoxia
deficiency in the amount of oxygen reaching a tissue
iatrogenic
an adjective that is used when a disease is caused by a medical action (the cause could be negligence or a complication)
idiopathic
an adjective that is used when the cause of a disease is unknown or when the disease arises spontaneously
incidence
in epidemiology, the number of new cases of disease or injury in a population over a specified period of time