This partitioning of functional properties found among single muscle fibers is conserved at a second level of the structural hierarchy, since the group of myofibers innervated by a single motor neuron (together called a motor unit) is composed of the same fiber type. Different motor units may be...
The present results indicate that impairment of individual muscle fibre structure and function is a major feature of ageing per se and that qualitative adaptations of muscle proteome are likely to be more involved than quantitative adaptations in determining such a phenomenon. 展开 ...
The skeletal muscle extracellular matrix (ECM) plays an important role in muscle fiber force transmission, maintenance, and repair. In both injured and diseased states, ECM adapts dramatically, a property that has clinical manifestations and alters muscle function. Here we review the structure, compos...
We compared structure and function of EDL and Soleus muscles in adult (4–6 m) mice lacking both Calsequestrin (CASQ) isoforms, the main SR Ca2+-binding proteins. Lack of CASQ induced ultrastructural alterations in ~30% of Soleus fibers, but not in EDL. Twitch time parameters were prolo...
Cohen (6, 7) and Dorai Raj and Cohen =-=(9)-=- have studied the function and light microscope structure of this system in crabs. In the crab, two populations of fibers can be distinguished in the accessory flexors on the basis of physiological be...Structural and functional correlation...
Muscle Structure and Function C.-n.(Joyce) ChenPT, PhD, ...L.A.SnowMD, PhD, inOrthopaedic Physical Therapy Secrets (Third Edition), 2017 20What is a strap or fusiform muscle? List examples of fusiform muscles. Muscles that have a parallel-fiber arrangement are strap orfusiform muscles. ...
The E2F transcription factor is a key cell cycle regulator. However, the inactivation of the entire E2F family in Drosophila is permissive throughout most of animal development until pupation when lethality occurs. Here we show that E2F function in the a
13、transverse portion for firm connection; with gap junction in longitudinal portion for transferring information & impulse, which play an important role in synchronous contraction and dilation of cardiac muscle fibers. Smooth muscleExplain the structure & function of a triad.The composition of the in...
In previous studies, themdxmodel presented a vastly altered myofibrillar cytoarchitecture, fiber branching and enhanced muscle weakness12,14,17. To directly link structure and mechanical function, we sought to calibrate both parameters, SHG morphometry and isometric force amplitudes, within the same sing...
Nutritional status, physical activity, lung and muscle function, exercise capacity, and quality of life were assessed. In addition, blood, breath condensate, and quadriceps muscle samples were tested for inflammatory markers. Moreover, fiber phenotype, signs of damage-regeneration, and the expression ...