[An electron microscopic observation on laryngeal epithelium in human fetus and adults].
Seventeen specimens of laryngeal mucous membrane taken from 14 fetus (9-38 week), 1 newborn and 2 adults were studied with scanning and transmission electron microscopes. The results showed that the cilia of ciliated epithelium began to develop in the 9th week embryo and matured at the 17th week; the epithelium of vocal cord matured during the 9th week and showed squamous epithelium during the 14th week. In the transitional area the ciliated epithelium gradually transformed into squamous epithelium.
Shen
Z
Z
Second Hospital, Ninpe.
D000328:Adult; D002923:Cilia / Q000648:ultrastructure; D004848:Epithelium / Q000648:ultrastructure; D006801:Humans; D007231:Infant, Newborn; D007820:Laryngeal Mucosa / Q000196:embryology / Q000648:ultrastructure*; D008854:Microscopy, Electron; D008855:Microscopy, Electron, Scanning