Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart3h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

14. The Autonomic Nervous System

Neurotransmitters of the ANS

Anatomy & Physiology

14. The Autonomic Nervous System

Neurotransmitters of the ANS

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Multiple Choice

Which of the following neurotransmitters is NOT released at sympathetic neuroeffector junctions?

Serotonin

Acetylcholine

Dopamine

Norepinephrine

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Verified step by step guidance

Step 1: Begin by understanding the sympathetic nervous system. It is part of the autonomic nervous system and is responsible for the 'fight or flight' response. Neurotransmitters released at sympathetic neuroeffector junctions play a key role in transmitting signals to target organs.

Step 2: Identify the primary neurotransmitters associated with the sympathetic nervous system. Norepinephrine is the main neurotransmitter released at most sympathetic neuroeffector junctions, while acetylcholine is released at preganglionic synapses.

Step 3: Consider dopamine. Dopamine can act as a neurotransmitter in certain sympathetic pathways, particularly in the renal system, where it influences blood flow and kidney function.

Step 4: Evaluate serotonin. Serotonin is primarily associated with the central nervous system and is involved in mood regulation, sleep, and appetite. It is not typically released at sympathetic neuroeffector junctions.

Step 5: Conclude that serotonin is the neurotransmitter that is NOT released at sympathetic neuroeffector junctions, based on its primary role in the central nervous system rather than the autonomic nervous system.