Tension responses to sudden length change in stimulated frog muscle fibres near slack length
نویسندگان
چکیده
منابع مشابه
Segmental length changes in stimulated frog sartorius muscle during dynamic mechanical responses.
The nonuniformity of dynamic mechanical responses along the length of stimulated frog sartorius muscle was examined by recording the length changes of muscle segments by means of streak photography. During isometric force development, the central or the pelvic end segment tended to shorten due to the stretching of the other segments. In muscles showing a marked nonuniformity in the segmental le...
متن کاملSelected contribution: effect of chronic passive length change on airway smooth muscle length-tension relationship.
The ability of rabbit trachealis to undergo plastic adaptation to chronic shortening or lengthening was assessed by setting the muscle preparations at three lengths for 24 h in relaxed state: a reference length in which applied force was approximately 1-2% of maximal active force (P(o)) and lengths considerably shorter and longer than the reference. Passive and active length-tension (L-T) curve...
متن کاملLength-tension relation in Limulus striated muscle
Laser diffraction techniques coupled with simultaneous tension measurements were used to determine the length-tension relation in intact, small (0.5-mm thick, 10-mm wide, 20-25-mm long) bundles of a Limulus (horseshoe crab) striated muscle, the telson levator muscle. This muscle differs from the model vertebrate systems in that the thick filaments are not of a constant length, but shorten from ...
متن کاملResting Sarcomere Length-Tension Relation in Living Frog Heart
The sarcomere pattern and tension of isolated resting frog atrial trabeculae were continuously monitored. In the absence of any resting tension the sarcomere lengths varied with the diameter of the trabeculae. In over 75 % of the trabeculae the value exceeded 2.05 microm, the estimated in vivo length of the thin filaments, and it was never less than 1.89 microm. When the trabeculae were stretch...
متن کاملSarcomere length and tension changes in tetanized frog muscle fibers after quick stretches and releases.
The sarcomere length changes in tetanized frog muscle fibers in response to quick fiber length changes were examined along the fiber length with a high-sensitivity laser diffraction technique. The experiments were only performed with muscle fibers in which the uniform orientation and sarcomere length of the component myofibrils were well preserved during a tetanus. When the sarcomere length cha...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Journal of Physiology
سال: 1977
ISSN: 0022-3751
DOI: 10.1113/jphysiol.1977.sp011911