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Questions and Answers
Where are the cell bodies located in the sympathetic nervous system?
What is the role of the Vagus nerve?
What system do the splanchnic nerves belong to?
Where do the splanchnic nerves originate in the spinal cord?
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What is the role of the enteric nervous system in the autonomic nervous system?
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Where are the cell bodies located in the parasympathetic nervous system?
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What is the pathway of pre and post ganglionic axons in the sympathetic nervous system when innervating blood vessels?
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What is the role of the enteric nervous system in the autonomic nervous system?
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Where do the splanchnic nerves originate in the spinal cord?
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What neurons and axons are involved in the somatic (voluntary) nervous system?
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Study Notes
Autonomic Nervous System
- Cell bodies in the sympathetic nervous system are located in the thoracic and lumbar regions of the spinal cord (T1-L2/L3).
Vagus Nerve
- The Vagus nerve (cranial nerve X) plays a crucial role in the parasympathetic nervous system, regulating various involuntary functions, such as heart rate, digestion, and respiration.
Splanchnic Nerves
- The splanchnic nerves belong to the sympathetic nervous system.
- They originate in the thoracic region of the spinal cord (T5-L2).
Parasympathetic Nervous System
- Cell bodies in the parasympathetic nervous system are located in the brainstem (cranial nerves III, VII, IX, X) and the sacral region of the spinal cord (S2-S4).
Sympathetic Nervous System Pathway
- Pre-ganglionic axons originate in the thoracic and lumbar regions of the spinal cord (T1-L2/L3) and travel to the sympathetic ganglia.
- Post-ganglionic axons originating from the sympathetic ganglia innervate blood vessels.
Enteric Nervous System
- The enteric nervous system, often referred to as the "little brain," is a subdivision of the autonomic nervous system that regulates gastrointestinal functions, such as motility, secretion, and blood flow.
Somatic Nervous System
- The somatic (voluntary) nervous system involves alpha motor neurons and their axons, responsible for transmitting signals from the central nervous system to muscles and glands.
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Description
Test your knowledge of the autonomic nervous system with this quiz. Explore the basic structure and pathways of the autonomic nervous system, including the options for axon travel. Get ready to tackle the objectives and enhance your understanding of this vital system.
