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 Many Fucks Housewives of Beverly Hills"'s co-star, Lisa Vanderpump. How Many Fucks "How Many Fucks" (censored as "How Many F**ks") is a song recorded by American singer Erika Jayne for her upcoming second studio album. Released as the album's lead single, the song was first distributed digitally on April 19, 2016, accompanied by the simultaneous release of a music video. In the video, Jayne performed "seductive" dance moves and wore "risqué" costumes. The song was written by Justin Tranter and Myah Marie, while Adam "Gage" Bruce solely produced the track. Musically, the single is a pop-rap and EDM track that discusses living