RT Book, Section A1 Artman, Michael A1 Mahony, Lynn A1 Teitel, David F. SR Print(0) ID 1140362719 T1 Myocyte Contraction and Relaxation T2 Neonatal Cardiology, 3e YR 2017 FD 2017 PB McGraw-Hill Education PP New York, NY SN 9780071834506 LK accesspediatrics.mhmedical.com/content.aspx?aid=1140362719 RD 2024/10/04 AB As described in Chapter 1, the developing mammalian heart undergoes a series of complex and tightly regulated processes during structural organogenesis. Considerable understanding of the genetic control of these pathways has been gained in recent years. Of equal importance are the functional changes in cardiac contraction and relaxation that accompany morphological development of the cardiovascular system. However, compared to our understanding of structural organogenesis, much less is known about the genetic, molecular, and cellular processes that control cardiac contractile function during embryonic development and fetal maturation.