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Human Pharmacology

Nursing

Quiz 27 :

Introduction to the Central Nervous System

Quiz 27 :

Introduction to the Central Nervous System

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A GABA agonist will result in:
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Multiple Choice
Answer:

Answer:

A
Through hyperpolarization of post-synaptic neurons, action potential frequency is decreased.

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After the neurotransmitter serotonin attaches to a post-synaptic receptor, it:
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Multiple Choice
Answer:

Answer:

C
Serotonin is recycled via a re-uptake mechanism, where it is taken back into the pre-synaptic terminal and readied for reuse. There is also a small amount of diffusion into the area surrounding the synapse, the neurotransmitter being ultimately taken into glial cells.

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Long-term use of a receptor agonist can lead to:
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Multiple Choice
Answer:

Answer:

E
Desensitization can occur with chronic stimulation. Two methods are known. Decreased receptor density, as well as changes in the cell physiology such that the messenger complex is more efficient.