What are the basic layers of the wall of alimentary canal?
The wall of the alimentary canal consists of four layers, such as mucosa, submucosa, muscularis, and serosa. The mucosa is commonly known as the mucus membrane, which involved in the production of mucus. The mucous membrane also consists of epithelium, lamina propria, a layer of connective tissue and dermis. Submucosa, as the name suggested, is inner to mucus membrane. It consists of blood and lymphatic vessels and some submucosal glands that release digestive secretion. Muscalaris is the third layer of the alimentary canal. It is composed of different types of muscles in different regions of alimentary canals as in the intestine, it is composed of smooth muscles, and in the sphincter, it is composed of skeleton muscles. The contraction in this layer promotes mechanical digestion or churning. The serosa is the fourth layer of the alimentary canal, which is external to the muscularis. It consists of visceral peritoneum and loose connective tissue layers. These tissues hold the alimentary canal in place. The alimentary canal consists of four layers, such as mucosa, submucosa, muscularis, and serosa. The first layer is a mucous membrane, and beneath this is the submucous membrane. The third layer is muscular, which consists of smooth muscles and involved in the churning. The fourth layer consists of some loose connective tissue that keeps the alimentary canal in the proper place.
