Table of contents

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1. Introduction to Psychology1h 43m
2. Psychology Research2h 20m
3. Biological Psychology2h 41m
4. Sensation and Perception28m
5. Consciousness and Sleep32m
- Sleep
  32m
6. Learning1h 26m
7. Memory34m
- Information Processing Model
  4m
- Storage - The Three Box Model of Memory
  29m
8. Cognition37m
- The Structure of Language
  12m
- Language Development
  25m
9. Emotion and Motivation35m
10. Developmental Psychology1h 20m
11. Personality1h 17m
12. Social Psychology1h 18m
13. Stress and Health41m
14. Psychological Disorders1h 27m
15. Treatment1h 24m

3. Biological Psychology

Communication in the Nervous System

Psychology

3. Biological Psychology

Communication in the Nervous System

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Multiple Choice

An _____ is a chemical substance that mimics or enhances the effects of a neurotransmitter.

excitatory neurotransmitter

inhibitory neurotransmitter

antagonist

agonist

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Understand the role of neurotransmitters: Neurotransmitters are chemical messengers that transmit signals across a chemical synapse, such as between a neuron and a muscle cell or another neuron.

Differentiate between types of neurotransmitters: Excitatory neurotransmitters promote the generation of an electrical signal in the receiving neuron, while inhibitory neurotransmitters prevent it.

Define an agonist: An agonist is a chemical that binds to a receptor and activates the receptor to produce a biological response. It mimics or enhances the effects of a neurotransmitter.

Contrast with an antagonist: An antagonist is a substance that binds to a receptor but does not activate it, thereby blocking or dampening a biological response.

Apply the concept: In the context of the problem, identify that an agonist is the chemical substance that mimics or enhances the effects of a neurotransmitter, making it the correct answer.