Chapter 8: Mitosis - Cell Division and Reproduction

Cancer is a Disease of the Cell Cycle
Cancer kills 1 in 5 people in the United States.
Cancer cells divide excessively and invade other
body tissues.
Tumor: Abnormal mass of cells that originates
from uncontrolled mitosis of a single cell.
Benign tumor: Cancer cells remain in original site.
Can easily be removed or treated
Malignant tumor: Cancer cells have ability to “detach”
from tumor and spread to other organs or tissues
Metastasis: Spread of cancer cells form site of origin to
another organ or tissue.
Tumor cells travel through blood vessels or lymph nodes.