Why do we feel different types of pain? - Pathways of nociception - Visceral afferent pathways from the gastrointestinal tract

3 important questions on Why do we feel different types of pain? - Pathways of nociception - Visceral afferent pathways from the gastrointestinal tract

Vagal pathways communication pain from which 3 GI tract locations?
Where are cell bodies for these nerves located?
Which location in the brainstem do they send their signals too?

upper gut, small intestine, and ascending colon
nodose ganglion
nucleus of the solitary tract in the brainstem

Where do Splanchnic Spinal Fibers transmit signals from?
Where are their cell bodies found?
state both prevertabral ganglia that signals pass through on their way to the spinal cord

lower gut, descending colon, and rectum
dorsal root ganglion (DRG)
celiac or mesenteric ganglia

What is the Enteric Nervous System's unique ability?
What enables the ENS to carry out this unique ability?

manage some functions independently (within the gut itself)
intrinsic primary neurons (interneurons and motor neurons) regulate local reflex responses

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