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

1. Introduction to Anatomy & Physiology

Levels of Organization

Anatomy & Physiology

1. Introduction to Anatomy & Physiology

Levels of Organization

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Multiple Choice

Preganglionic neurons of the autonomic nervous system are located in which of the following?

The autonomic ganglia

The central nervous system

The target organs

The peripheral nervous system only

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Verified step by step guidance

Understand the structure of the autonomic nervous system (ANS), which is divided into the sympathetic and parasympathetic divisions. Both divisions consist of preganglionic and postganglionic neurons.

Recall that preganglionic neurons are the first neurons in the two-neuron chain of the ANS. They originate in the central nervous system (CNS), specifically in the brainstem or spinal cord.

Note that autonomic ganglia are structures where preganglionic neurons synapse with postganglionic neurons. However, preganglionic neurons themselves are not located in the ganglia; they are located in the CNS.

Understand that postganglionic neurons extend from the autonomic ganglia to the target organs, while preganglionic neurons extend from the CNS to the autonomic ganglia.

Conclude that the correct location of preganglionic neurons is the central nervous system (CNS), as they originate there before traveling to the autonomic ganglia.