Digestive System

Digestive System Introduction The digestive tract lie downs of the digestive tract, a underpass extending from the mouth to the anus, plus the associated organs, which secrete fluids into the digestive tract. The term GI tract technically only refers to the hold out and intestine however is often used as a synonym for the digestive tract. The inside of the digestive tract is never-ending with the outside environment, where it opens at the mouth and anus. Nutrients cross the wall of the digestive tract to estimate the circulation. The digestive tract consists of the oral quarry, pharynx, oesophagus, have a bun in the oven, depleted intestine, large intestine, and anus. supplemental glands are associated with the digestive tract. The salivary glands resign into the oral cavity and the liver and pancreas are connected to the minuscular intestine. Various split of the digestive tract are specialise for different functions, however nearly all parts consist of fo ur points or tunics the mucous membrane, sub mucosa, muscularis, and serosa or adventitia. Digestive Tract Histology The inner or so tunic, the mucosa, consists of mucous epithelium, a empty-headed connective tissue called the lamina propria, and a thin smooth brawniness layer, the muscularis mucosa.

The epithelium in the mouth, esophagus and anus resists abrasion, and epithelium in the stomach and intestine absorbs and secretes. The sub mucosa lies just outside the mucosa. It is a thick layer of loose connective tissue containing nerves, kind vessels, and small glands. An extensive communicate of nerve cell processes forms a rete (network). The plexus is innervated by autono mic nerves. The muscularis which in most pa! rt of the digestive electron tube consists of an inner layer of circular smooth muscle and an satellite layer of longitudinal smooth muscle. Another nerve plexus, as well as innervated by autonomic nerves, lies between the two muscle layers. unneurotic the nerve plexuses of the sub mucosa and muscularis compose the enteric plexus. This plexus is extremely...If you want to get a full essay, order it on our website: OrderEssay.net

If you want to get a full information about our service, visit our page: write my essay