One type of skeletal muscle fibers, known as slow fibers, subserves tonic functions, including posture. When the end plate potential (EPP), generated at the neuromuscular junction, reaches threshold for eliciting an AP in the skeletal muscle fiber, an AP is propagated down the muscle fiber in...
THE development of the action potential mechanism has been studied during the differentiation of myoblasts into cross-striated muscle fibres. A clonal line of muscle cells isolated from rat thigh was usedbecause this provides a homogeneous population of cells easily accessible for electrophysiological ...
Hypophysectomy and adrenalectomy caused changes in skeletal muscle action potentials. Stimulation for 3–5 minutes, or immersion for 60 minutes in Ringer, caused a reduction in the action potential amplitude.doi:10.1007/BF00785168A. S. Mozzhukhin...
【单选题】 Initiation of an action potential in skeletal muscle by stimulating its motor nerve A. requires the release of NE B. requires spatial facilitation C. requires temporal facilitation D. requires the release of acetylcholine 如何将EXCEL生成题库手机刷题 如何制作自己的在线小题库 > ...
( 1971 ). Action potential generation in denervated rat skeletal muscle I. Quantitative aspects . Acta. Physiol. Scand. 81 : 557 – 564 .Redfern P, Thesieff S (1971) Action Potential generation in denervated rat skeletal muscle. Acta Physiol Scand 81:557–564 View Article...
We find that TTX and imidazole affect the maximal rate of rise of the action potential in a temperature-dependent manner.doi:10.1038/283485a0Cheung, D. W.Daniel, E. E.NatureCheung DW, Daniel EE (1980) Imidazole inhibits a temperature-dependent component of mammalian skeletal muscle action ...
Like skeletal-muscle cells, ventricular cardiac-muscle cells have a resting membrane potential closer to the sodium equilibrium potential than to the potassium equilibrium potential B. Unlike skeletal-muscle cells, the initial depolarization of ventricular cells is mainly due to calcium influx, not ...
Especially, an intracellular action potential (IAP) model, the starting point of an EMG model, should be precisely generated because of its importance as the main component for an EMG model. Generally, the Rosenfalck IAP model [75,89] has been used because of its computational simplicity [59...
However, in nerve and skeletal muscle this lasts for only a millisecond, at which time the membrane potential is just as rapidly restored to its resting negative value (repolarization). These events are controlled by the brief opening and closing of voltage-activated sodium and potassium channels ...
In almost all vertebrate fast skeletal muscles, the action potential exceeds the resting potential, giving a distinct positive overshoot to the crest. Between species, but not between individual fibers in the same muscle, some considerable variation occurs in the extent of the overshoot of zero ...