Human Digestion System

Jamie 09/10/09 SCI 241 Human Digestion Check Point The process of digestion commencement ceremony begins in the oral cavity. The bolus, or ball of regimen mixed with spitting, makes it’s counsel through the pharynx and into the esophagus. From the esophagus the bolus travels through a anatomical sphincter into the rear. The f atomic number 18 accordingly passes through the pyloric sphincter and into the deplete in the mouth catgut. From the small bowel, what hasn’t been absorbed passes into another sphincter and into the mammoth catgut. The mouth is the commencement ceremony of the digestive system. Salivary glands produce saliva in the mouth that makes food easy to swallow. Saliva contains an enzyme look toed salivary amylase that begins breaking level the starches into sugars. The mouth contains teeth that chew the food to make it thinkable to swallow; chewing increases the amount of food that comes in opposition with digestive substances. The mouth includes the tongue that helps finish the food with saliva. The stomach, which is make up of tether layers of muscle, temporarily stores the bolus. The stomach produces acid that mixes with the bolus and creates a substance called chyme. The stomach muscles contract thereby mixing its contents. score that only some of the digestion place in the stomach.

The small intestine is a narrow tube reason at 20 feet in length and is divided into three sections. The small intestine is the main organ for digestion and absorption of nutrients. The pancreas, gallbladder, colored and intestine exude substances into the small intestine that continues breaking down the chyme. The large intestine includes the colon and rectum and! is roughly five feet long. roughly vitamins, minerals and water are absorbed in this intestine. A equitable bacteria call intestinal micro flora breakdown the unabsorbed food much(prenominal) as fiber. Anything not absorbed in this intestine is then stored in the rectum until it is removed voluntarily from the anus. annexe: Nutrition: day-to-day Sources John Wiley & Sons, 2006If you want to get a full essay, distinguish it on our website: OrderEssay.net

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