embryonic development morula

After repeated cleavages, the embryo takes the form of a solid ball of cells and looks like a mulberry. This embryonic stage is called morula (a little mulberry). The embryo is now at the 16-celled sta..

All the events which change a zygote into a fully developed organism is called embryonic development. The entire process of development is called embryogenesis. Von Bear is called the "Father of Modern Embryology..

The 3 germ layers give rise to definite organs and organ systems. The different organs formed from the different layers are Germ Layer - Structures formed Ectoderm - Epidermis, lens retina, internal ear, CNS, middle and posterior pituitary and pineal gland Mesoderm - Muscles, connective tissue, der..

As the cells of the morula continue to divide, a cavity appears inside the morula. It forms the blastocoel. It separates a surface layer of blastomeres from an inner cell mass. The blastomeres on the surface of the embryo become flattened and form the trophoectoderm or trophobla..

While the amniotic cavity is being formed, another cavity develops. This arises as an out growth from the hindgut which pushes its way into extra embryonic coelom. It is known as allanto..

. The first half of the phase and the changes in these phases are controlled by estrogens and progesterone. The secretion of these hormones occur cyclically because of the cyclic secretions of pituitary gonadotropins in the female. The fertilised ovum in mammals and other higher animals passes thro..

Cell division forms a mode of reproduction in unicellular organisms. In multicellular organisms it is responsible for embryonic development and growth of the adult organism. It is also involved in repair and regeneration. Both asexual and sexual reproduction requires cell divisi..

Differentiation is the process by which the unspecialised embryonic cells change in structure and function during development and growth of an organism to form specialised cell types, tissues, and organs, distinct from one another. Differentiation makes cells of the same g..

Cell division forms a mode of reproduction in unicellular organisms. In multicellular organisms it is responsible for embryonic development and growth of the adult organism. It is also involved in repair and regeneration. Both asexual and sexual reproduction requires cell ..

Differentiation - Differentiation is the process by which the unspecialised embryonic cells change in structure and function during development and growth of an organism to form specialised cell types, tissues, and organs, distinct from one another. Differentiation makes cells o..