Podcast
Questions and Answers
What is the approximate ratio of visceral motor to visceral sensory fibers within the vagus nerve?
What is the approximate ratio of visceral motor to visceral sensory fibers within the vagus nerve?
- 80% visceral motor, 20% visceral sensory
- 90% visceral motor, 10% visceral sensory
- 20% visceral motor, 80% visceral sensory (correct)
- 50% visceral motor, 50% visceral sensory
Which anatomical structure does the vagus nerve NOT pass through as it exits the cranial cavity?
Which anatomical structure does the vagus nerve NOT pass through as it exits the cranial cavity?
- Thoracic inlet
- Esophageal hiatus
- Carotid sheath (correct)
- Tympano-occipital fissure
Following the root of the lung, how do the right and left vagus nerves divide?
Following the root of the lung, how do the right and left vagus nerves divide?
- Into cranial and caudal branches
- Into sympathetic and parasympathetic branches
- Into dorsal and ventral branches (correct)
- Into sensory and motor branches
Which of the following best describes the path of the dorsal vagal trunk after it is formed near the diaphragm?
Which of the following best describes the path of the dorsal vagal trunk after it is formed near the diaphragm?
Which of the following organs/structures is primarily innervated by the ventral vagal trunk?
Which of the following organs/structures is primarily innervated by the ventral vagal trunk?
What type of neuronal process do abdominal aortic plexuses NOT contain?
What type of neuronal process do abdominal aortic plexuses NOT contain?
At approximately which anatomical landmark does the major splanchnic nerve leave the sympathetic trunk?
At approximately which anatomical landmark does the major splanchnic nerve leave the sympathetic trunk?
Which of the following best describes the location of the celiac ganglia?
Which of the following best describes the location of the celiac ganglia?
What general anatomical feature defines a 'plexus' in the peripheral nervous system?
What general anatomical feature defines a 'plexus' in the peripheral nervous system?
Where do preganglionic axons of sympathetic splanchnic nerves synapse?
Where do preganglionic axons of sympathetic splanchnic nerves synapse?
Which vessels do the branches of the vagus and splanchnic sympathetic nerves intermingle along to form nerve plexuses in the abdomen?
Which vessels do the branches of the vagus and splanchnic sympathetic nerves intermingle along to form nerve plexuses in the abdomen?
What is anatomical relationship does the cranial mesenteric ganglion have with the celiac ganglion?
What is anatomical relationship does the cranial mesenteric ganglion have with the celiac ganglion?
Several sympathetic ganglia are located in the abdominal nerve plexuses. What fiber type are the cell bodies in these sympathetic ganglia?
Several sympathetic ganglia are located in the abdominal nerve plexuses. What fiber type are the cell bodies in these sympathetic ganglia?
What structure is located ventral to the aorta around the caudal mesenteric artery?
What structure is located ventral to the aorta around the caudal mesenteric artery?
Besides the kidneys and colon, what other system is mostly supplied by nerves leaving the caudal mesenteric ganglion?
Besides the kidneys and colon, what other system is mostly supplied by nerves leaving the caudal mesenteric ganglion?
Flashcards
Vagus Nerve
Vagus Nerve
The 10th cranial nerve which carries both sensory and motor fibres for the viscera (20% visceral motor, 80% visceral sensory).
Ganglion
Ganglion
A collection of neuronal cell bodies in the peripheral nervous system acting as relay stations between neurons.
Plexus
Plexus
A network where nerve fibers from different spinal nerves are sorted and recombined to supply a specific body part.
Splanchnic Nerves
Splanchnic Nerves
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Celiac Ganglia
Celiac Ganglia
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Cranial Mesenteric Ganglion
Cranial Mesenteric Ganglion
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Caudal Mesenteric Ganglion
Caudal Mesenteric Ganglion
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Abdominal Aortic Nerve Plexuses
Abdominal Aortic Nerve Plexuses
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Dorsal Vagal Trunk
Dorsal Vagal Trunk
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Ventral Vagal Trunk
Ventral Vagal Trunk
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Lumbar splanchnic nerves
Lumbar splanchnic nerves
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