Morphogenesis of the human laryngeal ventricles
Article first published online: 14 MAR 2012
Copyright © 2012 Wiley Periodicals, Inc.
Head & Neck
Volume 35, Issue 3, pages 361–369, March 2013
How to Cite
Viejo, F., Pascual-Font, A., Rivas, L., Hernández-Morato, I., Vázquez, T., Rodriguez-Niedenführ, M., McHanwell, S. and Sanudo, J. R. (2013), Morphogenesis of the human laryngeal ventricles. Head Neck, 35: 361–369. doi: 10.1002/hed.22970
- Issue published online: 16 FEB 2013
- Article first published online: 14 MAR 2012
- Manuscript Accepted: 20 DEC 2011
- Spanish Government. Grant Numbers: F.I.S. 0276/06, 0451/07
Two theories explain the origin of human laryngeal ventricles: (1) ventricles derive from the fifth pharyngeal pouches; (2) development independent from the pouches.
In all, there were 21 serially sectioned human embryos from stages 15 to 23, and 11 fetuses of 9 to 18 weeks. Computer-aided 3-dimentional reconstructions were made.
The cranial part of the laryngeal sulcus and future vestibule expands from the pharyngeal floor between the third and fourth pharyngeal pouches during stages 15 and 16 (33–37 days). The primordia of the ventricles appeared at stage 18 (44 days) as 2 lateral swellings in the caudal end of the future vestibule, limited by the third pharyngeal pouches. Active epithelial expansion and subsequent canalization during late embryonic and early fetal periods finalizes their development.
The laryngeal ventricles do not derive from the pharyngeal pouches but the median region of the pharyngeal floor between the third and fourth pharyngeal pouches and arches at the caudal end of the future vestibule. © 2012 Wiley Periodicals, Inc. Head Neck, 2013