A Drug That Blocks a Presynaptic Autoreceptor Most Likely

question 112

Multiple Choice

A drug that blocks a presynaptic autoreceptor most likely

• A) will induce the presynaptic cell to refire.
• B) alters the uptake of the neurotransmitter into the axon terminal.
• C) blocks the opening of ion channels in the postsynaptic membrane.
• D) increases the release of the neurotransmitter from the axon terminal.
• E) would be expected to act as an antagonist for this synapse.

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Definitions:

Potential Energy

The stored energy in an object or system due to its position or configuration.

Positron Emission Tomography

A type of medical imaging technique that uses radioactive substances to visualize and measure changes in metabolic processes and other physiological activities in the body.

Metabolism

The set of life-sustaining chemical transformations within the cells of living organisms that allows them to grow, reproduce, maintain their structures, and respond to their environments.

Isotopes

Variants of a chemical element that have the same number of protons but different numbers of neutrons in their atomic nuclei, resulting in different atomic masses.