Heart 8 around the two ventricles and proceeding toward the apex. This complex swirling pattern allows the heart to pump blood more effectively. There are two types of cells in cardiac muscle: muscle cells which have the ability to contract easily, and pacemaker cells of the conducting system. The muscle cells make up the bulk (99%) of cells in the atria and ventricles. These contractile cells are connected by intercalated discs which allow a rapid response to impulses of action potential from the pacemaker cells. The intercalated discs allow the cells to act as a syncytium and enable the contractions that
How My Heart Sings! "How My Heart Sings". Fifty years later, the recording remains painfully introspective, up-tempo or not. Evans was the Van Gogh of jazz: sensile and troubled, characteristics that expressed themselves in his playing his entire career". How My Heart Sings! How My Heart Sings! is a 1964 album by jazz musician Bill Evans, recorded at the same time as "Moon Beams". It was reissued in 1992 with one bonus track. Writing for Allmusic, music critic Thom Jurek wrote of the album "This is a tough recording; it flies in the face of the conventions Evans himself has set, and yet retrains