Why Does Morula Occur?

Following fertilization a series of rapid cell divisions occur that decrease the cells' size with each subsequent division—this eventually produces a morula. The different cells derived from cleavage, up to the blastula stage, are called blastomeres.

What causes morula?

The morula is produced by a series of cleavage divisions of the early embryo, starting with the single-celled zygote (cytula). Once the embryo has divided into 16 cells, it begins to resemble a mulberry, hence the name morula (Latin, morus: mulberry).

What is the function of morula?

The morula is the first embryonic stage where mammalian cells can be categorized as being either internal or external. The morula reaches the uterus between three and four days of development and greatly absorbs nutrients and fluid from the surrounding in preparation for the implantation process.