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Peristalsis

Peristalsis. Esophagus. The muscular tube that food passes through which connects the pharynx to the stomach. Layers of the esophagus. Muscularis externa. mucosa. submucosa. Layers of the esophagus.

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Peristalsis

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  1. Peristalsis

  2. Esophagus • The muscular tube that food passes through which connects the pharynx to the stomach

  3. Layers of the esophagus Muscularisexterna mucosa submucosa

  4. Layers of the esophagus • Mucosa: innermost layer of the esophagus that is made of epithelial tissue that sloughs off often • Submucosa: contains mucous secreting glands • Muscularisexternis: • Top 1/3 is voluntary muscle • Bottom 2/3 is involuntary muscle

  5. Peristalsis • Peristalsis: The rhythmic contraction and relaxation of the esophageal muscles which pushes food down to the stomach YouTube: Peristalsis after a bowl of corn pops

  6. Lower Esophageal sphincter • LES: separates the esophagus from the stomach • Helps contain stomach contents including acidic juices

  7. GERD • Gastroesophageal Reflux Disease • Caused by stomach acid flowing backward through the lower esophageal sphincter • May be caused by abnormal relaxation of the LES or hiatal hernia

  8. Treatment of GERD • Medications that turn off acid pumps in the stomach (Prilosec, Nexium) • Medications that make the stomach empty faster (Reglan) • Surgery to repair the sphincter or hiatal hernia

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