MECHANICAL PROPERTIES OF SUCCINYLCHOLINE ACTIVATED MUSCLE FIBERS IN THE INFERIOR OBLIQUE MUSCLE OF THE CAT
| Autor: | G. Lennerstrand, J. S. Outerbridge, T. Vilis |
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| Rok vydání: | 2009 |
| Předmět: |
Chemistry
Tension (physics) Succinylcholine General Medicine Anatomy Elastic Tissue Extraocular muscles Models Biological Electric Stimulation Ophthalmology Inferior oblique muscle medicine.anatomical_structure Oculomotor Muscles Length change Cats Biophysics medicine Animals SUCCINYLCHOLINE CHLORIDE Muscle Contraction |
| Zdroj: | Acta Ophthalmologica. 56:417-430 |
| ISSN: | 1755-375X |
| DOI: | 10.1111/j.1755-3768.1978.tb05695.x |
| Popis: | To determine the mechanical properties of the multi-innervated fibres in inferior oblique muscle of the cat, these fibers were selectively activated by means of an intravenous injection of succinylcholine chloride (Sch). For small sinusoidal length changes (+/- 1 mm) of low frequency, tension in the Sch activated muscle exhibited a component that was sensitive to the direction of stretch but was independent of the velocity. At higher frequencies of length change (16 Hz) a form of negative friction was observed. Negative friction had not been previously noted in mammalian muscles, although a similar friction was observed both in the muscles of insects and amphibians. These properties were expressed in the form of a simple mechanical model. |
| Databáze: | OpenAIRE |
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