Greg Seems to Be Preoccupied with the Possibility That He

question 39

Multiple Choice

Greg seems to be preoccupied with the possibility that he might miss an important message from someone in his family. He checks for new messages on his answering machine every 15 minutes. Greg's constant checking for messages could be considered an example of

• A) an obsession.
• B) a hallucination.
• C) a delusion.
• D) a compulsion.

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Definitions:

Synapse

The junction between two neurons, where electrical or chemical signals are transmitted from one neuron to another.

Postsynaptic Membrane

The part of the nerve cell that receives signals from another neuron at a synapse, responding to the neurotransmitters released.

Neurotransmitter Release

The process by which neurotransmitters are released from the synaptic vesicles of a neuron into the synaptic cleft to transmit signals to other neurons.

Neurotransmitters

Neurotransmitters are chemical messengers that transmit signals across a chemical synapse from one neuron to another target neuron, muscle cell, or gland cell.