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language
eng
Author
Fujimoto, Katsukuni
Tanaka, Osamu
Description
Regional close cellular appositions between elements of tunica media and intima (myoendothelial appositions) in cerebral arteries of the human fetus were studied through an electron microscope. Plasmalemmal appositions were observed between endothelial cells and smooth muscle cells in cerebral arteries. The form of these myoendothelial appositions varied from simple flat appositions of plasmalemma and cytoplasmic processes to extensive finger-shaped indentations of endothelial cells onto medial smooth cells. Simple membranous appositions predominated among these cellular appositions of cerebral arteries in the human fetus. The finger-shaped myoendothelial appositions were also observed in the arteries of the surface of the brain. Some of these myoendothelial contacts seem to contain myoendothelial tight junctions (zonula occludens). The myoendothelial appositions may help in the detection and propagation of mechanical (autoregulation) and humoral signals, and may serve as a mechanical support of the fragile cerebral arteries of the human fetus.
Subject
cerebral circulation
human fetus
electron microscopy
Journal Title
Shimane journal of medical science
Volume
9
Issue
1
Start Page
1
End Page
11
ISSN
03865959
ISSN(Online)
24332410
Published Date
1985-11-01
NCID
AA00841586
Publisher Aalternative
Shimane Medical University
NII Type
Departmental Bulletin Paper
Format
PDF
Text Version
出版社版
OAI-PMH Set
Faculty of Medicine
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