Action of Myofibrils In Muscular Contraction and ATP as an Energy Sourc

Action of Myofibrils In sizable Contraction and ATP as an Energy Source for Muscular ContractionAbstractThe objective of this research was to determine how myofibrils and ATP atomic number 18 involvedand/or altered in muscular contraction. I analyzed the bodily structure of myofibrils and theirsubunits of myosin and actin. I then determined that myosin shortens actin, carrying outa muscular contraction, by forming cross-bridges between the myosin heads and the actinfilaments. I also discovered how ATP is used in muscular contraction and then replacedby undergoing a reaction with PCr. This research is very important to athletes anddoctors in order understand how to increase muscular performance and trade musculardiseases, respectively.The human body has an uncountable number of muscle-builder fibers. There are somany, packed so tightly, that it makes it nearly impossible to isolate any pocket-sized number ofcells. In one study, it was determined that the tibialis anterior was m ade up of 160,000muscle fibers. 1 The size of this muscle is not particularly impressive and the ?bicepsbrachii muscle likely contains 3-4 times that number.? 2 Not only that, but humanskeletal muscles are always changing how they interact with themselves, and the rest ofthe body. This is especially apparent in muscular contraction. In fact, it has only been inthe last 50 years that we have begun to really understand them, and much of the researchthat has been done has been conducted on animals that are not humans one can see theproblems that may arise from cutting up a human and examining muscles as theycontract. It is important to have at least a rudimentary understanding of these processesfor one?s own health purposes, athletic performanc... ...296-305.5 MacIntosh, B., Gardiner, P., & McComas, A. Skeletal Muscle Form and Function2nd Edition. Chpt 11. 20066 Huxley, H. E. The Contractionof muscle. scientific American 199,67-82. 19587 Currie, David. The Molecular Basis of Muscular Contraction Hanxon and Huxley?ssliding filament theory of muscle contraction. http//faculty.etsu.edu/currie/muscmolec.htm2007 variantsFigure 1 Courtesy of www.edcemter.sdsu.eduFigure 2 Courtesy of www.ohioline.osu.edu/sc172/images/sc172_42.jpgFigure 3 Courtesy of www.biomed.miami.edu/pharm/faculty_Szczesna.htmlFigure 4 Courtesy ofhttp//www.embl-heidelberg.de/CellBiophys/LocalProbes/motorproteins/myosin.htmlFigure 5 Courtesy of http//www.edcenter.sdsu.eduFigure 6 Courtesy of http//biology.clc.uc.edu/graphics/bio104/atp.jpgFigure 7 Courtesy of http//staff.jccc.net/pdecell/cellresp/glycolysis.gif