A Sample of I-131 Decays from 12 Microcuries to 3

question 34

Multiple Choice

A sample of I-131 decays from 12 microcuries to 3.0 microcuries in 16 days.What is the half-life of I-131?

• A)16 days
• B)8.0 days
• C)32 days
• D)64 days
• E)4.0 days

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Definitions:

ANS

The Autonomic Nervous System, which controls involuntary bodily functions such as heart rate, digestion, and respiratory rate.

CNS

Central Nervous System, which includes the brain and spinal cord, responsible for processing and coordinating information in the body.

Efferent Neurons

Nerve cells that conduct impulses away from the central nervous system to muscles and glands.

Chain Ganglia

Collections of neuron cell bodies located outside the central nervous system and along the course of peripheral nerves, involved in transmitting nerve impulses.