Use the pull-down menus to insert the BEST terms and make th…

Use the pull-down menus to insert the BEST terms and make the following sentences true: Smooth muscle cells function similarly to skeletal muscles, but they also share some important differences.  For example, smooth muscle cells contract and relax than skeletal muscle cells and use ATP when doing so. Smooth muscle cells also use as the intracellular calcium ion sensor, rather than as in skeletal muscles. Finally, tropomyosin is not involved in blocking actin-myosin interactions in smooth muscles. Rather, activates myosin and inactivates myosin in smooth muscle cells to control myosin’s action.