![]() ![]() Muscular tube that conduct the bolus to the stomach It has upper sphincter (opens with swallow reflex and allows the bolus to enter the esophagus) and lower sphincter (controls emptying of the esophagus content to the stomach)įunction - secretion of gastric acid (hydrochloric acid + sodium chloride + pepsine) that digests proteins and converts bolus to chyme Primary organs: mouth, pharynx, esophagus, stomach, small intestines (duodenum, jejunum, ileum), large intestine (colon), rectum and anal canalĪccessory organs: salivary glands, liver, gall bladder, pancreasĬontains structures that start digestion: teeth (choping the food), salivary glands (secrete saliva that contain enzymes that start chemical digestion of sugar and fats), tongue (detects taste, pushes bolus towards the pharynx) Regulation of satiety and hunger, mechanical digestion (mastication), swallowing and chemical digestion of food absorption of necessary nutrients, elimination of unnecessary matter and waste In a nutshell, the digestive tract has the tumultuous responsibility of converting large chunks of food into their constituent micro-molecules that will subsequently be used to build and repair the body. ![]() In addition to this, the digestive system also eliminates the waste products from food and products from various endogenous metabolic processes. It contains organs that regulate food intake, its digestion and absorbtion of the useful materia that it contains. Extending from the mouth to the anus, the digestive tract is one of the largest systems in the human body.
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