|  | 31. | Reflux occurs when stomach acid backs up in the esophagus. 
 
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|  | 32. | He then inserted the skin tube to reconnect her trachea and esophagus. 
 
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|  | 33. | For example, the esophagus is affected if the permanganate is swallowed. 
 
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|  | 34. | The esophagus has a rich blood supply and venous drainage. 
 
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|  | 35. | The innervation of the esophagus develops from the pharyngeal arches. 
 
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|  | 36. | The esophagus is kept inflated by means of flaps beside the tongue. 
 
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|  | 37. | Quick and gentle manipulation under vision guides the endoscope into the esophagus. 
 
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|  | 38. | The esophagus enters to the buccal cavity dorsally in the anterior fourth. 
 
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|  | 39. | Presence of white exudates in esophagus is also suggestive of the diagnosis. 
 
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|  | 40. | Many birds possess a muscular pouch along the esophagus called a crop. 
 
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