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pleuroesophageal muscle

(plur′ō-ĭ-sŏfə-jēəl)
n.
  1. Any of the muscular fasciculi that arise from the mediastinal pleura and reinforce the musculature of the esophagus.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.