Definitions

Question 1

Define Tumour

Answer 1

Abnormal growth of tissue, resulting from uncontrolled progressive multiplication of cells, that serves no physiological function.

Question 2

Neoplasm

Answer 2

An abnormal mass of cells that exhibit uncontrolled proliferation, persists after cessation of stimuli that produced it.

Question 3

Cancer

Answer 3

Uncontrolled proliferation of cells that express varying degrees of fidelity to their precursor.

Question 4

Oncogensis

Answer 4

The process initiating and promoting the development of a neoplasm through the action of biologic, chemical or physical agents.

Question 5

Pathogensis

Answer 5

The production and development of disease.

Question 6

Oncogene

Answer 6

Result from mutation and activation of proto-oncogenes, and cause a transformation of normal cells into cancerous cells.

Question 7

Proto-oncogenes

Answer 7

Normall cells that are involved in the regulation of apoptosis and cell division.

Question 8

Mutation

Answer 8

Change in genetic sequence.

Question 9

Mutagen

Answer 9

Is a substance, preparation or other factor, that is capable of producing mutation.