When Does Metastasis Occur

question 25

Multiple Choice

When does metastasis occur?

• A)when a tumor grows and interferes with body functions
• B)when cancerous cells divide rapidly within an organ
• C)when cancer cells break off and invade other body parts
• D)when a nonmalignant cell grows slowly

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Definitions:

Informed Consent

The process by which a fully informed person can participate in choices about their health care or participation in research.

Volunteer Bias

The phenomenon in research where volunteers may differ from the general population in significant ways, potentially leading to skewed results due to the self-selection of participants.

Conditioning

A method of changing behavior where an individual learns to link a new behavior with a stimulus that was previously not related to it.

Research

The systematic investigation into and study of materials and sources in order to establish facts and reach new conclusions.