PMID: 9184025May 1, 1997Paper

Ultrastructure of the mucous membrane of the human newborn vocal folds

Nihon Jibiinkoka Gakkai kaiho
K SatoM Hirano

Abstract

This study was carried out to determine the ultrastructure of the mucous membrane of vocal folds of human newborns. Excised larynges of newborns were observed with a transmission electron microscope. The results obtained are summarized as follows: 1) The epithelium of the edge of the vocal folds consisted of stratified squamous epithelium. It was thin but numerous desmosomes showed firm attachment between cells. 2) The basement membrane zone had the same structure as that of adults. 3) The lamina propria of the vocal fold mucosa was loose in structure and there was no vocal ligament. 4) Fibroblasts were sparse and in the resting phase. 5) Collagenous and elastic fibers were sparse in the lamina propria. Structures of the the collagenous fibers wee mature but those of elastic fibers, were immature morphologically. 6) Ground substance was abundant in the lamina propria. 7) The newborn vocal fold mucosa lacked not only a vocal ligament but also adequate viscoelasticity for vibration.

Citations

Sep 14, 2000·Otolaryngologic Clinics of North America·J S McMurray
Nov 2, 2006·The Annals of Otology, Rhinology, and Laryngology·Kiminori SatoTadashi Nakashima
Sep 2, 2005·The Annals of Otology, Rhinology, and Laryngology·Kiminori Sato, Tadashi Nakashima
Mar 6, 2021·International Journal of Pediatric Otorhinolaryngology·Reham Abdelwakil Ibrahim, Elham Magdy Hassan

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