Myosin binds to actin and uses ATP to produce force Which stage of the cell cycle would be a good point to perform a karyotype? - made up of structural proteins that hold the thick filaments in place and serve as an anchoring point for elastic filaments, sliding filament mechanism of contraction, - thin filaments slide past thick filaments B) most forms do not appear to be inherited. As actin is pulled, the filaments move approximately 10 nm toward the M-line. Solved Which muscle cells have desmosomes and gap-junctions? | Chegg.com muscle, contractile tissue found in animals, the function of which is to produce motion. -M Line, found in the middle of the I band and is composed of structural proteins that: anchor the thin filaments in place and to one another, serve as attachment points fro elastic filaments, attach myofibrils to one another across the entire diameter of the muscle fiber, contains the zone of overlap, the region where we find both thick and thin filaments and where tension is generated during contraction, dark band, in middle of A band where only thick filaments exist, dark line in the middle of the A band Thick filaments are composed of the protein myosin; thin filaments are composed of the protein actin. Blood vessels and nerves also pass through these layers of connective tissue. Thus, the switch to glycolysis results in a slower rate of ATP availability to the muscle. Blaustein lab exam 2 Flashcards | Quizlet Test your knowledge on the skeletal muscle tissue with our quiz. As long as ATP is available, it readily attaches to myosin, the cross-bridge cycle can recur, and muscle contraction can continue. 1. Reading time: 11 minutes. Each skeletal muscle has three layers of connective tissue (called "mysia") that enclose it and provide structure to the muscle as a whole, and also . The thin filaments are then pulled by the myosin heads to slide past the thick filaments toward the center of the sarcomere. After this occurs, ATP is converted to ADP and Pi by the intrinsic ATPase activity of myosin. While only a small percentage of the heads are attached at any one time, the many heads and continual use of ATP ensures a smooth contraction. Smooth muscle is different from skeletal muscle in that the actin and myosin filament are not organized in convenient bundles. Muscle contraction is described by the sliding filament model of contraction. The key role of cardiomyocytes is to generate enough contractile force for the heart to beat effectively. B. thick filaments D. elastic filaments, -made of myosin Together these myofilaments work to create muscle contractions by allowing the myosin protein heads to walk along the actin filaments creating a sliding action.