"Morulation" Natural Recordings by Native Speakers
Morulation refers to the process of gastrulation, which is the third stage of embryonic development, where the embryonic cells undergo rapid cell division and differential growth to form the three primary germ layers: ectoderm, endoderm, and mesoderm. During morulation, the blastula, a hollow ball of cells, undergoes a series of complex and coordinated movements, in which the cells undergo a significant degree of cell rearrangement, resulting in the formation of a fluid-filled cavity, called the archenteron, which eventually gives rise to the digestive system. Morulation is a critical phase of embryogenesis, as it sets the stage for the subsequent development of organs and tissues.