The Use of Radioactive Sources Placed into a Tumor-Bearing Area

question 1168

Multiple Choice

The use of radioactive sources placed into a tumor-bearing area to generate high intensity radiation is termed

• A) stereotactic radiation treatment.
• B) proton beam treatment.
• C) brachytherapy.
• D) external beam radiation.

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Definitions:

Curare

A plant extract used historically as a poison on arrows and darts, which acts by causing paralysis.

Acetylcholine

A neurotransmitter in the nervous system that plays a crucial role in muscle activation and memory formation.

Antagonist

In pharmacology, a substance that blocks or dampens a biological response by binding to and inhibiting the effect of an agonist (the substance that would normally induce that response).

Receptor Sites

Specific locations on the surface of a cell or within the central nervous system where neurotransmitters bind to trigger a response.