Warnings. 1  If you have stopped sweating, are dizzy, experiencing painful cramps or feel disoriented, seek medical attention immediately. 2  Rapidly rehydrating with water alone can cause abnormally low sodium levels, which can also be dangerous to your health.
Best Answer: The endoderm is one of the germ layers formed during animal embryogenesis. It forms the epithelial lining of multiple systems, such as the gastrointestinal tract. The mesoderm germ layer forms in the embryos of animals more complex than cnidarians, making them triploblastic. During gastrulation, some of the cells migrating inward contribute to the mesoderm, an additional layer between the endoderm and the ectoderm, which contributes to the circulatory system. This layer also develops into a coelom within more complex organisms. The ectoderm is the start of a tissue that covers the body surfaces. It emerges first and forms from the outermost of the germ layers. In chickens, this would consist of feathers.
Each of the three primary germ layers will form a different set of specific organs and tissue types in the animal. The ectoderm will form the nervous system, the epithelial cells of the mammary glands, the lens of the eyes, hair, pigment cells and the epidermis of the skin.hese three layers, the endoderm, the ectoderm and the mesoderm, are called the primary germ layers. After gastrulation, the cup-like embryonic stage that contains at least two distinct germ layers is called the gastrula.