TY - JOUR
T1 - The human external auditory canal secretory system — an ultrastructural study
AU - Main, Thomas
AU - Lim, David
N1 - Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 1976/8
Y1 - 1976/8
N2 - Human external auditory canal skin, with a special emphasis on the secretory system, was studied by light, transmission electron and scanning electron microscopy. Two types of secretory glands were observed: modified apocrine (ceruminous) and sebaceous. The sebaceous secretory cells showed a typical holocrine mode of secretion, and its secretory vacuoles were homogeneous; on the other hand, modified apocrine secretory cells contained heterogeneous secretory granules. They were ither dark granules or light granules. In addition to these granules there were secretory vesicles. Evidence to support both the apocrine as well as the eccrine mode of secretion was noted in the modified apocrine gland. This finding is partly in agreement with early reports based on light microscopy which suggested only an apocrine mode and data based on transmission electron microscopy which showed only the eccrine mode. Significance of the secretion by the external ear canal and its role in a local immune defense system is discussed.
AB - Human external auditory canal skin, with a special emphasis on the secretory system, was studied by light, transmission electron and scanning electron microscopy. Two types of secretory glands were observed: modified apocrine (ceruminous) and sebaceous. The sebaceous secretory cells showed a typical holocrine mode of secretion, and its secretory vacuoles were homogeneous; on the other hand, modified apocrine secretory cells contained heterogeneous secretory granules. They were ither dark granules or light granules. In addition to these granules there were secretory vesicles. Evidence to support both the apocrine as well as the eccrine mode of secretion was noted in the modified apocrine gland. This finding is partly in agreement with early reports based on light microscopy which suggested only an apocrine mode and data based on transmission electron microscopy which showed only the eccrine mode. Significance of the secretion by the external ear canal and its role in a local immune defense system is discussed.
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U2 - 10.1288/00005537-197608000-00008
DO - 10.1288/00005537-197608000-00008
M3 - Article
C2 - 950858
AN - SCOPUS:0016988111
VL - 86
SP - 1164
EP - 1176
JO - The Laryngoscope
JF - The Laryngoscope
SN - 0023-852X
IS - 8
ER -