| The cytoplasm contains, in addition to digestive vacuoles, contractile vacuoles which probably function in the control of osmotic pressures. |
| Locomotor skeletal muscle protein synthesis is sensitive to contractile activity and rapidly decreases within the first hours of reduced use. |
| Good correlation exists between findings in vitro and the observed contractile properties in vivo. |
| Smooth muscle fibers usually contract slowly but are capable of sustained contractile activity. |
| The amount of contractile vacuoles can tailor in accordance with suctorian species, age and size. |
| Notice the collapsing contractile vacuole in the lower middle of the frame. |
