1. This produces a muscular actions of peristalsis and segmentation contractions. 2. This counters inhibiting effects of potassium on muscular action potentials. 3. Doliolids and salps rely on muscular action to propel themselves through surrounding sea water. 4. Galvani refuted this by obtaining muscular action with two pieces of the same material. 5. Whether the muscular action star will be back with it remains to be seen. 6. Fearful of provoking Serb retaliation, they have declined previously to permit more muscular action . 7. Produced as a by-product of potassium ions ( K + ) on muscular action potentials. 8. Fearful of provoking Serb retaliation, they have in the past declined a more muscular action . 9. A test called esophageal manometry can examine the muscular action of the esophagus, including sphincter function. 10. Prolonged muscular action causes sudden, powerful, and painful contractions of muscle groups, which is called " tetany ".