Methadone Is Thought to Be Effective Because It

question 24

Multiple Choice

Methadone is thought to be effective because it

• A) blocks just 25-35 percent of opioid receptor sites, enough to prevent cravings for these drugs over extended periods of time.
• B) binds to narcotic analgesic molecules in the blood, preventing them from forming chemical bonds with blood proteins and thus being more easily removed from the circulation.
• C) is able to block 50 percent of the mu receptor sites without activating them.
• D) activates only the kappa opioid receptor sites, causing dysphoria should the individual abuse opioids.

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Definitions:

Inhibitory Neurotransmitter

A type of neurotransmitter that decreases the likelihood of the neuron it acts upon to fire an action potential, thereby dampening neuronal activity.

GABA

A neurotransmitter in the brain responsible for reducing neuronal excitability throughout the nervous system.

Neurotransmitters

Chemical substances in the nervous system that transmit signals from one neuron to another, playing critical roles in communication within the brain and affecting various bodily functions.

Human Nervous System

The part of an individual's body that coordinates its actions by transmitting signals to and from different parts of its body.