Tags: Anatomical Structure, Embryology.
A morula (Latin morus: mulberry) is an embryo at an early stage of embryonic development consisting of cells (called blastomeres) in a solid ball contained within the zona pellucida.The morula is produced by embryonic cleavage the division of the zygote. Once the zygote has divided into 16 cells it begins to resemble a mulberry hence the name morula (Latin morus: mulberry).
