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THE CELLULAR LEVEL OF ORGANIZATION DISORDERS: HOMEOSTATIC IMBALANCES -…
THE CELLULAR LEVEL OF ORGANIZATION DISORDERS: HOMEOSTATIC IMBALANCES
Cancer
group of diseases characterized by uncontrolled or abnormal
cell division.
Types of Cancer
carcinomas, malignant tumors that arise from
epithelial cells.
Melanomas, cancerous growths of melanocytes
Sarcoma, cancer arising from muscle cells or connective tissues.
Leukemia, cancer of blood-forming organs, abnormal leukocytes
Lymphoma is a malignant disease of lymphatic tissue
Growth and Spread of Cancer
Malignant, invade surrounding tissues
trigger angiogenesis
normal tissue decreases in size and dies
invade a body cavity or enter the blood or lymph
pain associated with
cancer develops when the tumor presses on nerves
result of dying tissue or organs
Causes of Cancer
Carcinogens induce mutations
changes in the DNA base sequence of a gene
oncogenic
viruses
stimulating abnormal proliferation of
cells.
Cancer
Treatment of Cancer
removed surgically
Chemotherapy
administering
drugs that cause death of cancerous cells.
Radiation therapy
breaks
chromosomes, thus blocking cell division
virotherapy
use of viruses to kill cancer cells