 primary germ layers, mesoderm derivatives, first the contents, formation of mesoderm, C-loam formation, c-calated system, urinary angel structures, circulatory system, muscular system, and the skin, so first what is the mesoderm, student mesoderm is the third important primary germ layers are the embryonic layer, mesoderm is the second one is the endoderm and the third one is the mesoderm, interestingly mesoderm is involved in the sense of most of the body organs, the body organs are evolved from the mesoderm, position wise if we look at it is present between the endoderm and the actoderm, so the mesoderm is basically the layer between the actoderm and the endoderm, what are the different structures which are found by the mesoderm, the structures formed by the mesoderm are the c-loam, c-loam is called the body cavity, if we look at the space under the ribs, we can see the space of the body cavity or c-loam, the definition of c-loam is that it is a body cavity in which the mesoderm is present on the inside and outside, it means c-loam is formed by the mesoderm, if the mesoderm is not present on both sides then we do not call it c-loam, then we call it pseudo c-loam if it is present, or it is not present, so the formation of c-loam has two patterns, one pattern is that as soon as the gas process of c-loam increases, it means that the mesoderm is formed by the two large somaids, what will the blocks do, they will split, so the cavity is formed between the two, so one pattern is that when the mesoderm is formed, the first blocks are called somaids, they split and form the mesoderm, c-loam is called as splitting, so c-loam is formed by the splitting of mesoderm, the second pattern is that the aurcantauron comes out of two out pockets, and what does this out pocket do, it creates cavities between the mesoderm, so it means that it can be formed by out pocketing, so there are two basic methods, except c-loam, the second important structure that we are making is the skeletal systems, the skeletal systems are the cartilage and bones, all the bones are the product of mesoderm, all the bones that are formed by the mesoderm, the shape of the body that is connected to the structure of the mesodermal cells, so the mesodermal cells are formed by the bones, and the cartilage of the bones is parallel to the bones, but it is not like the bones, it is flexible structures, then you know genital structures, genital genital structures are our kidneys, our kidneys are gonads, there will be testes and ovaries in the gonads, testes and ovaries, associated glands, all the glands that are with them are involved in reproduction, similar to adrenal glands that are present on the kidneys, all these things are synthesized by the mesoderm, circulatory system, all the circulatory system is formed by the mesodermal cells, all the circulatory system cells that have three major components, number one blood, number two blood vessels, and number three heart, blood will be made of mesoderm, blood vessels, arteries, veins and capillaries, so three things are formed by the mesodermal cells, similarly heart, heart cells, which they are also formed by the, they are also derived by the mesodermal cells, so the white blood cells in the blood, red blood cells or platelets, all these will be mesodermal anaerogine, different types of muscles present in our body, there are three types of muscles in our body, that is the skeletal muscle, that is the smooth muscle and the cardiac muscles, skeletal muscles are attached to the bone, smooth muscles are attached to the internal body organs, which are involved in movement or the rest, and cardiac muscles are involved in the heart, which are making the structure of the heart, all these three muscles, they are formed by the mesodermal cells, similarly skin, the top most layer of the skin, which we call epidermal, it is called the actoderm, but the two layers of the skin, that is the dermis and hypodermis, both are formed by the mesodermal cells, both are formed by the mesodermal cells, these are the other tissues that make the mesodermal, the important one is the tendons and ligaments, tendons and ligaments, tendons and ligaments you know that tendons are attached to the muscles with the bone, ligaments keep our bones in a proper position, and the adipose tissues, adipose tissues are usually stored in our body, adipose tissues all these structures, they are also formed by the mesodermal cells so if we look at the comparative, then the actodermal and endodermal relationship is developed by the mesodermal organs