Describe the structure and function of a muscle fiber; summarize the process of muscle contraction. Explain how calcium regulates muscle contraction. How and why is the cytoplasmic level of calcium controlled? Describe how acetylcholine, calcium, and ATP are involved in the...
Diagram of part of a skeletal muscle fiber, illustrating the organization of the sarcoplasmic reticulum (SR) and transverse tubule (t-tubule) networks. The SR is a specialized smooth endoplasmic reticulum (ER) that in muscle serves as a store for Ca2+ ions. The SR forms a membranous tubule ...
skeletal muscle.The contractile units act as a muscle fiber to produce active shortening force,and the flexible matrix functions as connective tissue to generate passive deformation.The application of positive pressure to the contractile units can produce a linear contraction and force.In this actuator...
Total ordered mass decreased by -8% as ionic strength was raised from , = 20 to 100 mM in the relaxed muscle (Table 2). Because the decrease in ordered mass is accompanied by broaden- ing of peaks and weakening of higher order reflections particularly beyond [3, 1 ], we conclude that...
a rod-like bundle of myofilaments running the length of a muscle fiber myofilaments protein molecules that make up the myofibril; consist of thin filaments and thick filaments actin a protein that mainly makes up the thin filaments in muscle cells myosin protein that makes up the thick filame...
Compare and contrast the three major muscle fiber types in terms of their metabolism and fuel preference. Compare and contrast the metabolic changes in each tissue under the absorptive state and fasting state. 1. liver 2. adipose 3. skeletal muscle Describe the...
The harvested muscle was fixed in the muscle specific fixative (Servicebio, China) for 24 h and the cut into 5 μm cross sections. Hematoxylin and eosin (H&E) staining and Masson trichrome staining were performed on the sections to evaluate muscle fiber regeneration and collagen deposition. The...
Upscaling motor protein activity to perform work in man-made devices has long been an ambitious goal in bionanotechnology. The use of hierarchical motor assemblies, as realized in sarcomeres, has so far been complicated by the challenges of arranging suf
The skeletal muscles of the human arm are attached at a small-displacement high-force position, well-suited for the induced-strain muscle actuation (Figure 18A). As a catapulting twitch is performed, the nonlinear skeletal kinematics effects a favorable response during which the distance between ...
Then, motivated by the actuation mechanism of skeletal muscle, we prepare active fiber-dominated actuators using active polyurethane fibers via 4D printing ... L Ren,Q Wu,Q Liu,... - 《Journal of Bionic Engineering》 被引量: 0发表: 2022年 4DMesh: 4D Printing Morphing Non-Developable Mesh...