The contraction of the ventricles is referred to as __(1)__, and the period of ventricular relaxation is called __(2)__. The monosyllables describing heart sounds during the cardiac cycle are __(3)__. The first heart sound is a result of closure of the __(4)__ valves; closure of the __(5)__ valves causes the second heart sound. the heart chambers that have just been filled when you hear the first sound are the __(6)__, and the chambers that have just emptied are the __(7)__. Immediately after the second heart sound, the __(8)__ are filling with blood, and the __(9)__ are empty. Abnormal heart sounds, or __(10)__, usually indicate valve problems