A Drug That Blocks a Presynaptic Autoreceptor

question 109

Multiple Choice

A drug that blocks a presynaptic autoreceptor

• A) reduces the release of the neurotransmitter from the axon terminal.
• 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:

Selection Pressure

Environmental or social forces that influence the survival and reproductive success of an organism, driving evolutionary changes.

Fitness Benefits

Advantages conferred by certain traits or behaviors that increase an individual's reproductive success and survival, thereby contributing to the trait's prevalence in the population.

Signal Perception

The biological process through which organisms detect and respond to external cues or signals, essential for survival, communication, and interaction with the environment.

Maladaptive Response

A reaction or behavior that is counterproductive to an individual's wellbeing or survival.