The Use of Radioisotopes as Tracers in Medical and Environmental

question 13

Multiple Choice

The use of radioisotopes as tracers in medical and environmental research takes advantage of the fact that isotopes

• A)generally behave identically in chemical and physical processes.
• B)generally behave differently in chemical and physical processes.
• C)have different masses.
• D)none of the above

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Definitions:

Pons

A portion of the brainstem involved in regulating vital functions such as breathing, sleep cycles, and communication between different parts of the brain.

Cerebellum

A part of the brain at the back of the skull in vertebrates, responsible for coordinating and regulating muscular activity.

Thalamus

A vital brain structure that acts as the main relay station for sensory information to the cerebral cortex, excluding smell.

Hypothalamus

A region of the brain responsible for the production of hormones that regulate body temperature, hunger, moods, and the release of hormones from other glands, among other critical functions.