Series of questions Assignment Example | Topics and Well Written Essays - 750 words

Series of questions - Assignment Example Mucosa layer is a mucous membrane that gets a line in the gut all the way from the mouth towards the anus and contains numerous mucosal glands. It plays a significant role of secreting substances, absorption of digestion end products when they pass through it, as well as protection of the gut wall. It gets composed of three layers; the epithelium, the lamina, and the muscular mucosae. The epithelium layer gets located within the innermost section of the mucosa and made up of stratified squamous epithelium (Petrie, 2007). It has numerous goblet cells and endocrine cells. The goblet cells play the role of secreting mucus guards the gut wall from digestion, and, on the other hand, the endocrine hormone plays the role of secreting hormones into the human blood system. The lamina layer gets located outside the epithelium layer of mucosa and made up of individual tissues known as areolar connective tissue. It has some blood vessels and lymphatic vessels supplying nutrients to this wall and undertaking the absorption of the digestive end products. The muscular mucosae are the outermost layer of the mucosa and have smooth muscles, with the major role of conducting the local movements. The smooth muscles are numerous and, therefore, increase the surface area for absorption by mucosa. Submucosa layer gets loosened connective membrane layer, composed of numerous large blood vessels. It has various lymphatic and nerves with lots of glands that secret mucous. The areolar connective tissues in the submucosa layer get composed of nerve fibers. Submucosa layer plays the major role in giving support to the mucosa, together with joining the mucosa to the bulk of the smooth muscles. Muscularis Externa, also known as muscular propria, is a smooth muscular layer composed of two layers; the inner circular layer and the outer longitudinal layer. The two layers play a role of peristalsis to aid in the movement of food