The Lower Oesophageal Sphincter

One of the body’s most under-rated sphincters…

BT_PO 1.107

Explain the:

  •   Physiology of swallowing
  •   Factors preventing reflux of gastric contents into the oesophagus
  •   Control of gastric motility and emptying
  •   Composition of gastric fluid
  •   Physiology of nausea and vomiting

General anaesthesia reduces lower oesophageal sphincter tone. TRUE/FALSE

Cricoid pressure reduces lower oesophageal sphincter tone. TRUE/FALSE

Suxamethonium reduces lower oesophageal sphincter tone. TRUE/FALSE

The lower oesophageal sphincter is a physiological sphincter, primarily due to the oblique gastro-oesophageal angle. TRUE/FALSE

Relaxation of the lower oesophageal sphincter after swallowing is neurally mediated. TRUE/FALSE

 

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