Biology diegstion

Biology diegstion

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  • The human digestive system contains many different organs which are the mouth, epiglottis, pharynx, esophagus, liver, gallbladder, small intestine, stomach, pancreas, large intestine, and anus. 
  • The mouth is where digestion begins. Teeth in the mouth break up the food and the enzymes in saliva help break up the food. The food goes through the pharynx and into the esophagus which moves food to the stomach.  The stomach is an organ with a tough lining and has strong acids needed to break down food.  The pancreas forms hormones that regulate blood glucose level and enzymes that break down food as well. The gallbladder stores bile which is released to dissolve and break down food.
  •  The esophagus is a muscular tube that connects the pharynx to the stomach. It moves the food with a process called peristalsis which uses muscle contraction. The walls of the stomach have 3 layers of smooth muscle. The stomach has an acidic solution with a ph of around 2 that allows for digestion.
  • The .small intestine is around 7m in length. This is where food completed chemical digestion where the pancreas, liver, and gallbladder produces enzymes and digests food as well as hormones. The pancreas produces enzymes to digest carbohydrates, proteins, and fats. It also releases fluid in the small intestine to above 7. The liver produces bile in order to break down fats. Bile is stored in the gallbladder and can be released in the small inestine.
  • The large intestine is the end portion of the digestive system. It is around 1.5 m long and contains the rectum, colon, and appendix. The appendix is mainly useless and can become inflamed. The colon is mainly used to absorb water and have the feces be removed through the anus.
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