| Literature DB >> 14260375 |
R S FILO, D F BOHR, J C RUEGG.
Abstract
Contractions of glycerinated skeletal (striated) and vascular (smooth) muscles are similar in their calcium dependence but differ in their magnesium dependence. The threshold concentration of free Ca(++) for contraction of either muscle was 1.8 x 10(-7)M; maximum tension developed when the concentration of free Ca(++) was slightly greater than 10(-6)M. The Mg concentration required for contraction of smooth muscle was at least ten times as great as that for skeletal muscle.Entities:
Keywords: BUFFERS; CALCIUM; CHEMISTRY; EXPERIMENTAL LAB STUDY; GLYCERIN; MAGNESIUM; MUSCLE CONTRACTION; MUSCLE, SMOOTH; PHYSIOLOGY
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Year: 1965 PMID: 14260375 DOI: 10.1126/science.147.3665.1581
Source DB: PubMed Journal: Science ISSN: 0036-8075 Impact factor: 47.728