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Pathophysiology Of Homeostasis

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The second most important thing for humans to remain in homeostasis is the source of food. The human will eat meals around three times a day that consists of breakfast, lunch, and dinner to survive. People have energy that lasts the entire day and do not get overweight for eating three times a day because of the digestive system. The digestive system will make food undergo many steps to produce energy and influence growth and repair until, finally, not needing it anymore and making waste of it. The digestive system begins in the human’s mouth. With the use of the teeth, tongue, and, salivary glands the breaking down of food will begin to take place. The teeth are living organs that contain blood vessels and nerves under the dentin, which are …show more content…

The pharynx will play a major role for both the respiratory system and the digestive system as it has a flap tissue called “epiglottis” that will either guide air to the larynx into the lungs or it will send the food into the esophagus (Taylor). The esophagus, a muscular tube, connects both the pharynx and the stomach. Food that has been swallowed will go through multiple contractions called, “peristalsis,” where the esophagus is pushing food down into the stomach (Robinson). Before entering the stomach, there is an area in the esophagus called “lower esophageal sphincter” (Taylor). It is a muscle that prevents the food already in the stomach from returning into the esophagus …show more content…

The stomach, being the size of a smartphone, will be responsible for the storage of food so that there is enough time to properly digest larger meals (Taylor). Within the stomach, there are enzymes and hydrochloric acid that will be secreted to continue the breaking down of food (Taylor). This breaking down of the meal will disintegrate the food making it into a source of energy that will be slowly absorbed until getting into the small intestine. After the meals have been broken down, the stomach will slowly empty the substances inside into the small intestine and this process is called “chyme” (“Your Digestive System & How It works”). The small intestine, being twenty feet long in length, is divided into three parts which are the duodenum, jejunum, and ileum (Robinson). The duodenum helps by continuing the breaking down of food, while both the jejunum and ileum are responsible of extracting all of the nutrients (Robinson). As the food leaves the small intestine, the amount of 90% of the nutrients will be extracted to be absorbed to be used as an energy source

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