With this post, we continue our biweekly series on medications used to treat bipolar disorder and related symptoms. This week, we focus the spotlight on Tegretol (carbamazepine) â an anti-seizure medication that has been found useful in treating bipolar disorder. Useful in treating acute mania and mixed states particularly when a person doesnât respond well to or tolerate lithium or valproate (Depakote).
Cleavage-Blastula Structure. The blastula is a hollow ball of cells organized into an epithelial monolayer. Midway through the blastula stage, the embryo secretes hatching enzyme, which results in proteolytic degradation of the fertilization envelope.leavage-Blastula Structure. The blastula is a hollow ball of cells organized into an epithelial monolayer. Midway through the blastula stage, the embryo secretes hatching enzyme, which results in proteolytic degradation of the fertilization envelope.
The cavity inside the blastula is called blastocoel, and its outer single cell layer is called blastoderm. Gastrula. The continuous development of blastula finally results the gastrula. The conversion process of the blastula into gastrula is called âgastrulationâ.Gastrulation is followed by the organogenesis. Gastrula is composed of three primary germ layers, which eventually give rise to organs in the late embryo. The primary germ layers are ectoderm, mesoderm, and endoderm.he three germ layers of gastrula interact in various ways to form organs, hence called organogenesis. Since, blastula and gastrula occur separately as different structures in different phases, there are some differences can be observed between both structures. Blastula.