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language
eng
Author
Oki, Mitsuru
Tanaka, Osamu
Domoto, Tokio
Gonda, Tatsuo
Description
Three types of myofilaments in the stomach muscle were studied with an electron microscope, in connection with isometric and isotonic contraction. In dogs, generally, thick and thin filaments were observed in the contracted muscles.In frogs, thick filaments were found only in the contracted muscles of which myoplasm invariably contained calcium (oxalate or pyroantimonate) deposits.In frog stomach, contracted muscles often contained lattice-like arrangements of thin filaments, suggesting molecular changes. Dense bodies were often contracted and associated with contraction of thin filaments.It was postulated that the dense bodies-thin filaments system is functionally equivalent to the sarcomere of the striated muscles. Both contraction-relaxation cycles and formation of thick filaments are probably regulated by the intracellular concentration of free calcium.
Subject
myofilaments
contracted and relaxed stomach
calcium ions
Journal Title
Shimane journal of medical science
Volume
4
Issue
1
Start Page
9
End Page
22
ISSN
03865959
Published Date
1980-06-01
NCID
AA00841586
NII Type
Departmental Bulletin Paper
Format
PDF
Text Version
出版社版
OAI-PMH Set
Faculty of Medicine
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