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Gastrointestinal Physiology
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Gastrointestinal Physiology
Enteric nervous system
• lies in the wall of the gut (esophagus anus)
• controls GI movement and secretions
• consists of 2 plexuses
o myenteric - peristalsis
o submucosal – secretion and (local) blood flow
• axon endings secrete acetylcholine which excites gastrointestinal activity, and norepinephrine, which inhibits it
Parasympathetic innervation
• cranial
o mouth & pharynx
o VAGUS nerve
esophagus, stomach, pancreas and (somewh...
Approximate word count: 901
Approximate pages: 4 (250 words per
double-spaced page) |
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