Selected sections from Chapter 18 Cancer: Uncontrolled Cell Division and Differentiation
9
Copyright © 2009 Pearson Education, Inc. Selected sections from Chapter 18 Cancer: Uncontrolled Cell Division and Differentiation Tumor Benign Malignant
description
Selected sections from Chapter 18 Cancer: Uncontrolled Cell Division and Differentiation. Tumor Benign Malignant. Characteristics of Benign Tumors and Cancers. Table 18.1. Tumors. Benign Remain in one location Single, well-defined mass May be surrounded by connective tissue Cancerous - PowerPoint PPT Presentation
Transcript of Selected sections from Chapter 18 Cancer: Uncontrolled Cell Division and Differentiation
Copyright © 2009 Pearson Education, Inc.
Selected sections from Chapter 18Cancer: Uncontrolled Cell Division and Differentiation
Tumor Benign Malignant
Copyright © 2009 Pearson Education, Inc. Table 18.1
Characteristics of Benign Tumors and Cancers
Copyright © 2009 Pearson Education, Inc.
Tumors
Benign Remain in one location Single, well-defined mass May be surrounded by connective tissue
Cancerous Abnormal cell structure; may appear
undifferentiated May spread Edge of tumor not clearly defined
Copyright © 2009 Pearson Education, Inc. Figure 18.2
Animation—Cancer
Malignant Tumor Development
PLAY
Copyright © 2009 Pearson Education, Inc.
How Cancer Develops
Apoptosis Mutated or damaged genes
Proto-oncogenes Normal regulatory genes
Oncogenes Mutated or damaged proto-oncogenes
Tumor suppressor genes Regulatory genes slow cell division, TS genes may be turned off, damaged, or
mutated in cancers
Copyright © 2009 Pearson Education, Inc.
Factors Contributing to Cancer
Viruses and bacteria Chemicals in the environment Tobacco Radiation Dietary factors Internal Factors
Free Radicals
Copyright © 2009 Pearson Education, Inc.
Cancer Treatments
Conventional treatments Surgery Radiation Chemotherapy
Copyright © 2009 Pearson Education, Inc. Table 18.3
Ten Most Common Cancers
Copyright © 2009 Pearson Education, Inc.
Most Cancers Are Preventable
Know family history Get regular medical screenings Learn self-examination techniques Avoid direct sunlight 10 a.m. to 4 p.m.,
sunlamps, and tanning salons Watch diet and weight Don’t smoke Drink in moderation, if at all Be informed
