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

Introduction to the Autonomic Nervous System

Anatomy & Physiology

14. The Autonomic Nervous System

Introduction to the Autonomic Nervous System

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Multiple Choice

Which of the following correctly lists the main components of the signaling pathway in the autonomic nervous system?

Preganglionic neuron, autonomic ganglion, postganglionic neuron, effector organ

Cerebral cortex, cranial nerve, sensory receptor, effector organ

Interneuron, dorsal root ganglion, effector cell

Sensory neuron, spinal cord, motor neuron, skeletal muscle

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Verified step by step guidance

Step 1: Understand the autonomic nervous system (ANS) signaling pathway. The ANS is responsible for involuntary control of body functions, such as heart rate, digestion, and respiratory rate. It involves a two-neuron chain: preganglionic and postganglionic neurons.

Step 2: Identify the components of the signaling pathway in the ANS. The pathway typically starts with a preganglionic neuron, which originates in the central nervous system (CNS) and synapses in an autonomic ganglion.

Step 3: Recognize the role of the autonomic ganglion. This is where the preganglionic neuron communicates with the postganglionic neuron via neurotransmitters, such as acetylcholine.

Step 4: Follow the postganglionic neuron to the effector organ. The postganglionic neuron extends from the autonomic ganglion to the target effector organ, such as smooth muscle, cardiac muscle, or glands, to elicit a response.

Step 5: Compare the options provided in the problem. The correct sequence for the ANS signaling pathway is: Preganglionic neuron → autonomic ganglion → postganglionic neuron → effector organ. This matches the first option listed in the problem.