Human digestion Essay

The salivary glands are the first to react in the digestive suffice, which are normally triggered by either the sight or the facial expression of viands. Food enters the digestive tract by means of the mouth where the teeth, tongue, and salivary glands help wash out and break down the food indoors minutes. The food then becomes something called a bolus, which leave travel done the throat, then through the esophagus, and into the stomach. As the food travels through the pharynx the epiglottis is in place to prevent food from entering the lungs.Once the bolus enters the stomach it is furrowed down with acid secretions. The food is partially digested within the stomach. The bolus then becomes chyme (a semiliquid food). Chyme usually leaves the stomach during a time drop of 2-6 hours. The slender catgut is where most of the digestion and alimental absorption takes place with the help of secretions from the liver, gallbladder, and pancreas.The small bowel consists of three pa rts the duodenum, the jejunum, and the ileum. Anything that is non absorbed in the small intestine then enters the large intestine locomotion through the sphincter. The sphincter prevents any of the be food from re-entering the small intestine. The large intestine is made up of two study parts the colon and the rectum. The colon back up in the absorption of leftover water, vitamins, or minerals. Anything left over after this process is considered waste product (feces) and is then excreted from the clay via the anus, whichis attached to the colon. ReferenceHuman Digestion Activity. Retrieved marvellous 21, 2009 fromhttp//corptrain.phoenix.edu/axia/sci241/sci241-digestivetract.html