Cardiac physiology ventricles, pushing open the tricuspid and mitral valves. As pressure drops within the ventricles, blood flows from the major veins into the relaxed atria and from there into the ventricles. Both chambers are in diastole, the atrioventricular valves are open, and the semilunar valves remain closed. The cardiac cycle is complete. One of the simplest methods of assessing the heart's condition is to listen to it using a stethoscope. In a healthy heart, there are only two audible heart sounds, called S1 and S2. The first heart sound S1, is the sound created by the closing of the atrioventricular valves
I Belong to You/How Many Ways I Belong to You/How Many Ways "I Belong to You"/"How Many Ways", alternatively "How Many Ways"/"I Belong to You" in the vinyl edition, is the fifth and final single from American R&B singer Toni Braxton's self-titled debut album, "Toni Braxton" (1993). The single was released in the United States in 1994 with both songs as double-sided songs. "I Belong to You" was written by Vassal Benford and Ronald Spearman and produced by Benford. While there was no music video for "I Belong to You", the song garnered Braxton a nomination for Best Female R&B Vocal Performance at the 1996 Grammy