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Terminal Stages in the Development of the Human Stapes. Presented by Barry J. Anson, Ph.D., Earl W. Cauldwell, M.S., and Arthur F. Reimann.
This paper will be published in full in the Archives of Otolaryngology.
Muscular Variation of the Pharyngoesophageal Segment. Presented by Dr. Nora B. Brandenburg.
The pharyngoesophageal segment was studied in 41 bodies. Attention was directed to the muscular coat surrounding the esophagus, especially to the so-called esophageal triangle located below the cricopharyngeal muscle. Separation between the pharynx and the prevertebral muscles was easily accomplished in all cases.The majority of the fibers of the constrictor pharyngis inferior muscle were seen to ascend obliquely and insert into the median raphe. The most inferior fibers coursed horizontally and overlapped the beginning of the esophagus. The direction of their arrangement was directly opposite to that of the fibers of the pharyngeal muscles. Variations occurring in these structures result in marked