What is the mesoderm?

Mesoderm is one of the three main layers in the evolving embryo, referred to as a layer of germ cells. Other layers of germ cells are endoderm and ectoderm. When the embryo develops, different organs and parts of the body develop from these layers of germ cells. The developing from the mesoderm is muscles, bones, some skin tissue, connective tissue, reproductive and urinary systems and other internal organs. The embryos of all complex animals, including humans, contain mesodermal layers in their early development. Each of the different layers in the early embryo begins as a relatively simple structure, then changes and grows to create numerous interacting parts necessary to create a functioning living creature. Each layer becomes organs and tissues that depend on tissues and organs created in different layers, so the evolution of each layer must occur correctly to develop in a viable fetus. Each of these subdivizes develops in a different set of organs and other body tissues. Two more layers, ectoderm and endodeRM, eventually become external tissue, such as leather and teeth (ectoderm) and inner tissue that lines most of the internal organs (endoderm). This process of development is similar among most vertebrates.

One of the mesoderm layers is the mesoderm of the lateral plate. This part of the embryonic tissue is divided into layers that develop in the wall of the body, the wall of the intestines and the circulatory system. Another layer, the middle mesoderm, becomes a urinary and reproductive system. Paraxial mesoderm becomes facial muscles, vertebrae, skeletal muscles and dermic layer of skin. Chordamesoderm, or axial mesoderm, develops into different parts of the spine.

Another benefit for this means of development is that at the beginning of the process is created coeloma or cavity of the body. In this cavity there is space for the development of various internal organs. When the animal is mature, the cavity of the body found in the abdomen, placed most of the vital organs and providesProtection for such fine and important body parts such as heart, lungs and intestines. The lining of the abdominal cavity, called peritoneum, is also derived from the mesoderm during early development.