Protein signalling in heart development Protein signalling in heart development The heart is the first functional organ in a vertebrate embryo. There are 5 stages to heart development. Specification of cardiac precursor cells: The lateral plate mesoderm delaminates to form two layers: the dorsal somatic (parietal) mesoderm and the ventral splanchnic (visceral) mesoderm. The heart precursor cells come from the two regions of the splanchnic mesoderm called the cardiogenic mesoderm. These cells can differentiate into endocardium which lines the heart chamber and valves and the myocardium which forms the musculature of the ventricles and the atria. The heart cells are specified in anterior mesoderm by
How My Heart Sings! 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 the deep, nearly profound lyricism that was the pianist's trademark." On All About Jazz C. Michael Bailey said "After the ballad-laden "Moon Beams", producer Orrin Keepnews wanted a slightly more up-tempo recording that resulted in