Podcast
Questions and Answers
Where are the cell bodies located in the sympathetic nervous system?
Where are the cell bodies located in the sympathetic nervous system?
- Cell bodies are located in the lateral horns of the spinal cord grey matter (T1-L2/3). (correct)
- Cell bodies are located in the brainstem.
- Cell bodies are located in the ventral root ganglia.
- Cell bodies are located in the dorsal root ganglia.
What is the pathway of pre and post ganglionic axons in the sympathetic nervous system?
What is the pathway of pre and post ganglionic axons in the sympathetic nervous system?
- Both pre and post-ganglionic axons are short.
- Pre-ganglionic axons are long and post-ganglionic axons are short.
- Both pre and post-ganglionic axons are long.
- Pre-ganglionic axons are short and post-ganglionic axons are long. (correct)
What is the origin of splanchnic nerves and which system do they belong to?
What is the origin of splanchnic nerves and which system do they belong to?
- Splanchnic nerves originate in the adrenal glands and belong to the sympathetic system.
- Splanchnic nerves originate in the spinal cord and belong to the parasympathetic system.
- Splanchnic nerves originate in the brainstem and belong to the parasympathetic system.
- Splanchnic nerves originate in the spinal cord and belong to the sympathetic system. (correct)
What is the role of the Vagus nerve and which system does it belong to?
What is the role of the Vagus nerve and which system does it belong to?
Where are the cell bodies located in the parasympathetic nervous system?
Where are the cell bodies located in the parasympathetic nervous system?
What is the pathway of pre and post ganglionic axons in the parasympathetic nervous system?
What is the pathway of pre and post ganglionic axons in the parasympathetic nervous system?
What is the role of the enteric nervous system in the autonomic nervous system?
What is the role of the enteric nervous system in the autonomic nervous system?
Which type of neurons respond to mechanical, thermal, osmotic, and chemical stimuli in the enteric nervous system?
Which type of neurons respond to mechanical, thermal, osmotic, and chemical stimuli in the enteric nervous system?
What is the main function of interneurons in the enteric nervous system?
What is the main function of interneurons in the enteric nervous system?
What is the role of parasympathetic nervous system in the body?
What is the role of parasympathetic nervous system in the body?
Which action is associated with the sympathetic nervous system?
Which action is associated with the sympathetic nervous system?
What effect does the parasympathetic nervous system have on digestion?
What effect does the parasympathetic nervous system have on digestion?
What is the function of motor neurons in the enteric nervous system?
What is the function of motor neurons in the enteric nervous system?
Which response is associated with the sympathetic nervous system?
Which response is associated with the sympathetic nervous system?
What is the main function of the autonomic nervous system?
What is the main function of the autonomic nervous system?
What is the relationship between the enteric nervous system and the central nervous system?
What is the relationship between the enteric nervous system and the central nervous system?
Where are the preganglionic cell bodies of the parasympathetic division located?
Where are the preganglionic cell bodies of the parasympathetic division located?
Which region forms the Lesser Splanchnic Nerve?
Which region forms the Lesser Splanchnic Nerve?
Where do the sympathetic axons from thoracic levels travel to provide sympathetic innervation to the head?
Where do the sympathetic axons from thoracic levels travel to provide sympathetic innervation to the head?
Where do the postganglionic axons of the sympathetic nervous system synapse?
Where do the postganglionic axons of the sympathetic nervous system synapse?
Which division of the autonomic nervous system has a 'long pre-ganglionic component' and a 'short post-ganglionic component'?
Which division of the autonomic nervous system has a 'long pre-ganglionic component' and a 'short post-ganglionic component'?
Which nerve supplies visceral organs in the head and travels as far caudally as the left colic flexure of the large intestine?
Which nerve supplies visceral organs in the head and travels as far caudally as the left colic flexure of the large intestine?
Which is the intrinsic nervous system of the Gastrointestinal Tract?
Which is the intrinsic nervous system of the Gastrointestinal Tract?
What type of axons are myelinated in the autonomic nervous system?
What type of axons are myelinated in the autonomic nervous system?
Where are the cell bodies located for the sympathetic division of the autonomic nervous system?
Where are the cell bodies located for the sympathetic division of the autonomic nervous system?
Which regions are involved in the sympathetic innervation of the heart and lungs?
Which regions are involved in the sympathetic innervation of the heart and lungs?
What structures are involved in the sympathetic nervous system innervation of glands and blood vessels in the skin?
What structures are involved in the sympathetic nervous system innervation of glands and blood vessels in the skin?
What is the route for pre-ganglionic axons in the sympathetic autonomic pathway to reach paravertebral ganglia?
What is the route for pre-ganglionic axons in the sympathetic autonomic pathway to reach paravertebral ganglia?
Where do post-ganglionic axons synapse to reach prevertebral ganglia in the sympathetic autonomic pathway?
Where do post-ganglionic axons synapse to reach prevertebral ganglia in the sympathetic autonomic pathway?
What is the rule followed by the autonomic nervous system in terms of its divisions?
What is the rule followed by the autonomic nervous system in terms of its divisions?
Study Notes
Autonomic Nervous System Pathways and Innervation
- The nervous system components include the somatic nervous system and autonomic nervous system, each with specific functions and structures.
- The autonomic nervous system has a 2-neuron chain from the spinal cord, involving preganglionic and postganglionic axons that travel to target organs.
- Pre-ganglionic axons in the autonomic nervous system are myelinated, while post-ganglionic axons are unmyelinated.
- The autonomic nervous system follows the "Rule of 2's," with two divisions (sympathetic and parasympathetic) arising from specific regions of the central nervous system.
- The sympathetic division has cell bodies in the T1-L2 spinal cord regions, with axons traveling internally as General Visceral Efferent (GVE) type axons.
- The sympathetic nervous system involves structures such as the paravertebral ganglia, dorsal and ventral roots, and gray and white rami communicans.
- The autonomic pathway involves pre-ganglionic axons leaving the lateral horn, traveling through the white rami communicans to reach paravertebral ganglia, and then synapsing on splanchnic nerves to reach prevertebral ganglia.
- The sympathetic innervation of visceral organs in the thorax, abdomen, and pelvis occurs through specific pathways, with exceptions for the heart and lungs.
- The sympathetic innervation of the heart and lungs involves T1-T4 segments and cardiopulmonary splanchnic nerves, with potential contributions from cervical ganglia.
- The sympathetic nervous system innervates glands and blood vessels in the skin, with specific options for the autonomic pathway.
- The sympathetic autonomic pathway offers various options for innervation, including specific routes for blood vessels and glands in the skin, and for visceral organs.
- The sympathetic autonomic pathway involves complex neural pathways and innervation patterns, with specific routes for different target organs and structures.
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Description
Test your knowledge of autonomic nervous system pathways and innervation with this quiz. Explore the 2-neuron chain, myelination of axons, divisions, and specific innervation patterns for visceral organs, glands, and blood vessels.
