KINE 1020 Lecture Notes - Endoplasmic Reticulum, Mechanotransduction, Myofibril
29 Dec 2013
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Document Summary
If one is activated, the next one is also activated involuntary. Muscle many muscles in the body composed of many cells . Muscle cell - elongated structure unlike other cells . Myofibril - contractile unit, also the cause of striation in muscles, responsible for force, speed generated by muscle. Responsible for the action produced by a muscle. The different regions are categorized by the amount of protein found in the various regions of the. A band: more protein, hence appears darker in the muscles. Associated with troponin; combine to create tropomyosin. For myosin to be able to de/attach to actin, needs atp. Needs to transform chemical energy into mechanical. Atp is hydrolysed by myosinatpase(head of myosin), which helps release the chemical energy in. Prepare actin filament to be ready for myosin. Binds to group of proteins called troponins, found on the f actin. Binding causes movements that allows binding site on actin to be available for myosin.
