TY - JOUR
T1 - Human tympanic membrane
T2 - An ultrastructural observation
AU - Lim, D. J.
N1 - Funding Information:
This investigation is supported in part by research grahts from NIH NINDS (SROI-NB 05816-05) and the Deafness Research Foundation.
Copyright:
Copyright 2016 Elsevier B.V., All rights reserved.
PY - 1970
Y1 - 1970
N2 - Submicroscopic details of the human tympanic membrane were studied utilizing a transmission electron microscope (T. E. M.) and a scanning electron microscope (S. E. M.) Three layers were distinctly recognized; outer epidermal, middle lamina propria and inner mucous layer. In pars flaccida, the middle lamina propria is formed of loose connective tissues with abundant elastic and collagen fibers. On the other hand, in the pars tensa, the middle lamina propria is formed of outer radial and inner circular fibers. Besides these two types of fibers, parabolic fibers were observed between the radial and circular fibers. The fibrils of the para tensa fibers are rectangular in cross-sectional view and are mixed with varying amounts of collagen fibrils. As in animals, the human pars flaccida was considerably thicker than the pars tensa, contrary to the popular concept that they are thinner.
AB - Submicroscopic details of the human tympanic membrane were studied utilizing a transmission electron microscope (T. E. M.) and a scanning electron microscope (S. E. M.) Three layers were distinctly recognized; outer epidermal, middle lamina propria and inner mucous layer. In pars flaccida, the middle lamina propria is formed of loose connective tissues with abundant elastic and collagen fibers. On the other hand, in the pars tensa, the middle lamina propria is formed of outer radial and inner circular fibers. Besides these two types of fibers, parabolic fibers were observed between the radial and circular fibers. The fibrils of the para tensa fibers are rectangular in cross-sectional view and are mixed with varying amounts of collagen fibrils. As in animals, the human pars flaccida was considerably thicker than the pars tensa, contrary to the popular concept that they are thinner.
UR - http://www.scopus.com/inward/record.url?scp=0014847885&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0014847885&partnerID=8YFLogxK
U2 - 10.3109/00016487009181875
DO - 10.3109/00016487009181875
M3 - Article
C2 - 5477148
AN - SCOPUS:0014847885
SN - 0001-6489
VL - 70
SP - 176
EP - 186
JO - Acta Oto-Laryngologica
JF - Acta Oto-Laryngologica
IS - 3
ER -