The sphere or globular mass of cells (blastomeres), formed by the clevage of the ovum or egg in the first stages of its development; -- called also mulberry mass, segmentation sphere, and blastosphere. See Segmentation.
a little mulberry; a term applied by E. Haeckel to a free-swimming stage of a coral embryo. (The term does not apply to human development where the blastomeres are surrounded by a zona pellucida and the anlage of the blastocoele develops with the very first subdivisions of the ovum; cf. blastomeric ovum).
(Latin, morula = mulberry) early stage in development (week 1) where the cells have divided to produce a solid mass of cells with a "mulberry" appearance. This stage is followed by formation of a cavity in the mass (blastocyst stage). (More? Week 1 Notes | Week 1 Early Cell Division)
The preimplantation embryo 3-4 days after fertilization, when it is a solid mass composed of 12-32 cells ( blastomeres). After the eight-cell stage, the cells of the preimplantation embryo begin to adhere to each other more tightly, becoming "compacted". The resulting embryo resembles a mulberry and is called a morula (Latin: morus = mulberry).
An early stage of embryonic development (roughly 16-64 cells) at which the embryo is a solid spherical mass of cells, resulting from the early cleavage divisions of the zygote; so called because of its resemblance to a “little mulberry” (in Latin, morula).
A very early stage of pre-natal mammalian development. This stage starts when the zygote has developed into a mass of 16 cells. This is typically 4 days after fertilization, and about 10 days before it becomes implanted in the wall of the womb.
A stage of embryo development after 4 days of culturein vivo (inside the body). Between the 8-cell stage and the blastocyst stageof development, all the cells of the embryo merge together, this is referredto as a morula.
A morula (Latin "morus", mulberry) is an embryo at an early stage of embryonic development, consisting of approximately 12-32 cells (called blastomeres) in a solid ball contained within the zona pellucida. The morula is produced by embryonic cleavage, the rapid division of the zygote. After reaching the 16-cell stage, the cells of the morula differentiate.