2.7

Question 1

Metaplasia

Answer 1

Transformation from one time of epithelium to another

Question 2

Dysplasia

Answer 2

Uncontrolled cell proliferation; often a precursor to cancer

Question 3

Neoplasia

Answer 3

Complete uncontrolled cell growth; loss of function; autonomous

Question 4

Describe some ways in which tumours may increase their own chances of survival

Answer 4

• Secreting immunosuppressive cytokines
• Promoting angiogenesis -> blood supply
• Increasing metabolism, increasing energy for further growth and proliferation