CHECK THESE SAMPLES OF Actin-based cell motility: myofibril contraction
When the muscle is in the resting state, that is, when there is no shortening of the fibers due to contraction, a pale area can be seen in the center of the A band.... This hinge allows the myosin to generate the force required for muscle contraction.... The sliding filament theory explains muscle contraction, and the structure of skeletal muscle provides important clues to the mechanism of contraction.... Each myofibril consists of a repeating unit, known as a sarcomere....
8 Pages
(2000 words)
Essay
hellip; Any movement of even a body part is actually manifestation of contraction of these skeletal muscles transmitted to the skeleton.... While contraction is an essential property of muscles, the smooth muscles also contract in a similar manner, the only difference being these contractions are not controlled by volition.... Before going into this discussion, contraction must be defined.... contraction is defined by activation of the muscle fibers with a demonstrable shortening of the muscle fibers2....
5 Pages
(1250 words)
Essay
Calcium ions are imperative to the contraction of muscles.... The part of the muscle fiber responsible for contraction is called the myofibril.... The sarcomeres contain protein filaments which is the core reason for muscle contraction.... This is basically the contraction site of the muscle.... These fibers are each a long cell with some unique cellular characteristics.... The sarcolemma is the plasma membrane to the muscle fiber (cell) with some very important features....
6 Pages
(1500 words)
Essay
The mechanism of muscle contraction has been described through the sliding filament model, in which components, instead of decreasing in length, overlap among one another.... The next question is, where does ATP and Ca2+ needed for muscle contraction come from?... Because of the many mechanisms discussed above, various conditions cause imbalance and subsequent abnormality to muscle contraction.... In myotonia congenita, the chloride channel ions needed to put back the myofibrils into its hyperpolarized state after contraction are not expressed, leading to delayed relaxation....
3 Pages
(750 words)
Essay
The paper ” Disorders of Motility” discusses motility, which refers to the contraction of muscles in the mixing and propelling of substances in the gastrointestinal (GI) tract which is responsible for the digestion system.... hellip; The author states that the disorders of motility are the abnormalities in the contraction of muscles in the gastrointestinal tract.... The disorders of motility are the abnormalities in the contraction of muscles in the gastrointestinal tract....
3 Pages
(750 words)
Essay
"Effect of Exercise on Skeletal Muscle" paper determines whether there are any alterations in the metabolic and mitogenic pathways in skeletal muscle physiology of normal persons and highly trained athletes.... The stimulus for this study was provided by past research.... hellip; Slow to fast and fast to slow transformations do occur in the human skeletal muscle and this is brought about by the regulation of the MHC isoform transformations....
13 Pages
(3250 words)
Coursework
This work called "Comparative Genomics" describes MYH genes of the skeletal and cardiac muscles.... From this work, it seems that MYH 15 is an orthologue of chicken ventricular myosins and it is a form of slow type myosin.... hellip; Samples that contained the target gene were subcloned for future sequencing in the polymerase chain reactions....
18 Pages
(4500 words)
Essay
… The paper “cell Division and the Musсulоskеlеtаl System, Importance of Mitosis and Meiosis” is a well-turned example of coursework on biology.... Mitosis is a cell division process whereby an individual cell undergoes cell division which results in two daughter cells.... The paper “cell Division and the Musсulоskеlеtаl System, Importance of Mitosis and Meiosis” is a well-turned example of coursework on biology....
6 Pages
(1500 words)
Coursework