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Symptoms of Buccopharyngeal membrane. Diagnostic studies for Buccopharyngeal membrane. The ultrastructure of the oral buccopharyngeal membrane in the embryo of the urodelan, Hynobius tokyoensis, was examined by transmission TEM and scanning electron microscopy SEM. The oral membrane consists of the stomodeal ectoderm and foregut endoderm, and is three to five cell layers thick at stage The oral membrane gradually thickens as development proceeds.
In front of the buccopharyngeal area, where the lateral crescents of mesoderm fuse in the middle line, the pericardium is afterward developed, and this region is therefore designated the pericardial area. This article incorporates text in the public domain from page 47 of the 20th edition of Gray's Anatomy Buccopharyngeal membrane The region where the crescentic masses of the ectoderm and endoderm come into direct contact with each other constitutes a thin membrane, the buccopharyngeal membrane or oropharyngeal membrane , which forms a septum between the primitive mouth and pharynx.
Buccopharyngeal membrane Human embryo about fifteen days old. Brain and heart represented from right side.
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