In the  trunk there  ar two  briny(prenominal)  consistence systems  unrivaled being the circulatory system and the  new(prenominal) being the digestive system.    The digestive system has four main stages these  be ingestion, digestion,  do utilise and elimination. Ingestion starts at the m come forwardh where the  pabulum enters the mouth and is chewed using the teeth in the mouth. The salivary glands in the mouth  make up saliva which also helps to break  provender  shoot  depressed and makes it easier to sw on the wholeow. Once the   fodder for thought has been swallowed is goes down the oesophagus where the   compel muscle movements help push the food to the stomach.   Once the food reaches the stomach the  surgical procedure called digestion begins; the acids in the stomach make a very hostile environment for  bacterium to survive  cardinal of the main acids in the stomach is called hydrochloric acid. Once all the bacteria in the stomach is killed the food passes  by means of t   o the  low-down  bowel and the process called absorption begins. The large food molecules are  overturned down in the  underage intestine and the  food are absorbed by the micro villi. Once all the nutrients in the food has been absorbed the process called elimination begins this is when the  scattered down food is no longer needed and is eliminated out of the rectum.

    The circulatory system is made up of the heart, vessels such as capillaries, veins and arteries, lungs and  stock. The  cable travels all over the  trunk through the capillaries, veins and arteries; distributing type O and  other nutrients around the body. This is a never en   ding process as when the blood has used up t!   he oxygen and is deoxygenated the blood goes through the right atrium and into the lungs to be oxygenated again and then go to the  go forth atrium in the heart to be  wield around the body.    The circulatory system and the digestive system  reach to take a crapher in  pose to keep the body fully functioning for  poser the small micro villi absorbs the nutrients from the small intestine to the blood so that it could be passed around the body; all the nutrients...If you want to get a full essay, order it on our website: 
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