the study of the causes of a disease - Etiology
a tissue in which the cells vary in size and shape - Dysplasia
when a group of cells in the body dies - Necrosis
wasting of skeletal muscle - Atrophy
ingestion of foreign material or cell debris by white blood cells (a bacterial capsule can provide some
protection) - Phagocytosis
significant change in the proportion of one type of WBC - Leukocytosis
replacement of damaged tissue by similar cells - Regeneration
cells which are required to process and present antigens from foreign material as the initial step in the
immune response. - Macrophage
involved in humoral immunity - B Lymphocytes
transplant rejection by the recipient's immune system - Host-vs.-Graft disease
thrives in the absence of oxygen - Anaerobe
change in the genetic information of a microbe - Microbial mutation
infection acquired in a hospital or medical facility - Nosocomial infection
, a healthy person whose body harbors pathogens and can transmit them to others - Carrier
assumes that all body fluids from all individuals are possible sources of infection - Universal Precautions
time between entry of the pathogen into the body and the first signs of illness - Incubation period
benign neoplasm originating from adipose tissue - Lipoma
malignant neoplasms arising from connective tissue - Sarcoma
Spreading of a malignant tumor (e.g. malignant brain tumors often spread to other parts of the CNS) -
Metastasis
the process causing cancer, usually results when there is an irreversible change in DNA - Carcinogenesis
when a body is unable to maintain homeostasis - Disease is
contains a protein coat and DNA or RNA, uses a host cell to reproduce, is stopped by antiviral drugs
which reduce the rate of viral replication - viruses
caused by various factors including microorganisms (viruses & bacteria) - Disease can be
for example, systemic signs can include fever - Manifestations of disease are the signs and symptoms of
disease
given once a disease is diagnosed which indicates the predicted outcome of recover - prognosis
some with more promising prognoses (flu), others with less promising prognoses (cancer or malignant
neoplasm). - There are many diseases