Abstract
The active state of muscle is characterized by two mechanical properties, the capacity to exert or resist a force and the ability to shorten. The former is known to reach its full extent and very quickly after a stimulus; the development of the latter has been examined experimentally. Isotonic twitches of a frog's sartorius were recorded at 0ºC with equipment of high sensitivity and very small inertia. Following the latent period, about 8 msec, was required for the full velocity of shortening to be reached, after which it was maintained for some time. The delay was not due to inertia, but a substantial part of it is probably to be attributed to a statistical distribution of speed of response in individual fibres. In the ultimate contractile elements, therefore, the transition from rest to full activity is extremely rapid.
Reference11 articles.
1. A bbott B . C. & R itchie J . M. 1951 Physiol. 113 336-345.
2. Proc. Roy;Soc. B,1938
3. Proc. R oy;Soc. B,1949
4. bProc. Roy;Soc. B,1949
5. c Proc. Roy;Soc. B,1949
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