Sliding Filament Theory 3d Model. You will present your model on a segment of the fictitious show csi the science revealed targeted to middle and high school students. Muscle contraction as well as much of the motility of nonmuscle cells has now been shown to be produced by the relative motion of actin filaments and myosin filaments or myosins attached to cargoes.
This model will be manipulated to show the sequence of events that occur during normal shortening of the sarcomere as well as educate your audience on why the muscles can lock up after death. According to the sliding filament theory the myosin filaments of muscle fibers slide past the actin filaments during muscle contraction while the two groups of filaments remain at relatively constant length. Instead they slide by one another causing the sarcomere to shorten while the filaments remain the same length.
However thick and thin filaments the components of sarcomeres do not shorten.
Sliding filament model of contraction. The sliding filament theory explains the mechanism of muscle contraction based on muscle proteins that slide past each other to generate movement. It was independently introduced in 1954 by two research teams one consisting of andrew f. This theory was proposed by h e huxley and j.
