Nonsteady motion in unloaded contractions of single frog cardiac cells
We studied the mode of shortening of enzymatically isolated single frog cardiac cells with a high-speed videosystem to see whether or not shortening is smooth. The segmental shortening of the cell in response to electrical stimulation exhibited a clear pause following the initial shortening over a d...
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Published in | Biophysical journal Vol. 48; no. 3; pp. 461 - 465 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Bethesda, MD
Elsevier Inc
01.09.1985
Biophysical Society |
Subjects | |
Online Access | Get full text |
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Summary: | We studied the mode of shortening of enzymatically isolated single frog cardiac cells with a high-speed videosystem to see whether or not shortening is smooth. The segmental shortening of the cell in response to electrical stimulation exhibited a clear pause following the initial shortening over a distance of approximately 11 nm/half-sarcomere. Several preparations showed a second pause following the initial one. Nonsteady motion with a pause lasted usually a few tens of milliseconds. The duration of nonsteady motion was shorter in cells with large velocities of steady shortening following the pause than those with smaller velocities. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0006-3495 1542-0086 |
DOI: | 10.1016/S0006-3495(85)83801-7 |