Food is defined as a substance that can be metabolized by an organism to give energy and build tissue. The process of changing the food as the source of energy for human body is known as the digestive system. Digestive system is also important to take the food nutrient such as protein, vitamin, carbohydrate, minerals and so on. Human digestive system consists of two main digestion systems which are mechanical and chemical digestion. Human digestive system consists of seven crucial stages. The stages are mouth, pharynx and esophagus, stomach, small intestine, large intestine, rectum and lastly, rectum (refer to Figure 1 in Appendix 1).
The first stage in the digestive system is mouth. Digestion of food begins with the action of chewing the food. The process of chewing refers to the breaking down the large size of the food particle into the smaller size. Chewing process becomes easier with the presence of teeth. During this process, saliva is produced. The saliva plays the role as the substance that helps to break down the chemical in the food gradually. Therefore, the chewed food can be in the form of more digestible by the body for further processes. Throughout this process, the tongue pushes the bolus to the back of the throat or the pharynx (Your digestive system, 2013). Bolus is the term used for the mushed-up food.
The next stages are the pharynx and esophagus. Pharynx is also known as the throat. It plays as the intermediate to transfer the bolus from the mouth to the esophagus or swallowing. The process occur in the pharynx is reflex but it is also under voluntary control (Johnson, 2012). As stated before, the tongue will push the bolus into the pharynx. At the same time, this action closes of the trachea. Then, the food w...
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...ate automatically. The defecation is depends of the individual feel to expel the feces. Late of defecation will lead to constipate that also will make the human feel not comfortable.
Works Cited
Campbell, N.A. (1946). Biology (4th ed.).California, US: The Benjamin/Cummings Publishing Company, Inc.
Digestive system. (2013). Retrieved from http://www.innerbody.com/image/digeov.html
Diseases and Condition. (2009). Retrieved from http://my.clevelandclinic.org/anatomy/digestive_system/hic_the_structure_and_function_of_the_digestive_system.aspx
Dosh, S. A. (2002). Evaluation and treatment of constipation. The Journal of Family Practice, 555-560.
Johnson, K. (2012). Your digestive system. Retrieved from http://www.webmd.com/heartburn-gerd/your-digestive-system?page=2
Your digestive system. (2013). Retrieved from http://kidshealth.org/kid/htbw/digestive_system.html#
IBS is a functional GI disorder, meaning it cannot be explained by any specific structural or biochemical abnormality. The disorder is subdivided into three different types, which are named on the basis of the predominant symptom – IBS-D (diarrhea-predominant), IBS-C (constipation-predominant), IBS-M (mixed diarrhea and constipation). Clinical presentation varies considerably with regard to the quality of the predominant feature and the overall severity of symptoms. Formal diagnosis is based on the most recent Rome III criteria, which require that a patient experience recurrent abdominal discomfort of at least 3 days per month over the previous 3 months, with a total symptom duration of at least 6 months, in...
Through time, most renowned practitioners of alternative medicine have claimed that an unclean colon is the most dominant cause of all kinds of diseases. Without regular and proper bowl movements, the waste material that is supposed to be driven out of the body remains inside. They in turn produce toxins which are slowly absorbed by other parts of the body including the organs. This in no way can be something good for the body. In fact the toxic waste can
The digestive system, in organisms like the mink and human, is supposed to break down the food being eaten to transfer into energy. This energy helps other functions of the body that would in turn keep it alive. The digestive system includes organs such as the stomach, intestines, liver, etc. Digestion starts at the mouth, though.
4)Stomach: The stomach squeezes and mixes food with enzymes for hours before it releases the mixture into the small intestine.
In order for this breakdown to happen, the ‘tube’ through which the food travels requires assistance from a number of other digestive organs starting with the salivary glands, and later receiving
Fig1. shows the human digestive system or the alimentary canal with different organs. (ladyofHats 2006).
Large Intestine- The large intestine is made of 3 parts; the cecum, the colon, and the rectum. Some refer to the large intestine as the colon, because the colon contains four separate parts; the ascending colon, the transverse colon, the descending colon, and the sigmoid colon (WebMD (2).) The cecum connects the small and the large intestine, acting as a transition area for food to travel. The ascending colon takes feces from the cecum to the transverse colon, during this process, bacteria digest fecal matter for the release of vitamins. The longest part of the colon, the transverse colon, is where the most absorption within the large intestine takes place. The descending colon transports feces from the transverse colon to the sigmoid colon. The descending colon walls also absorb water, nutrients, and vitamins from the feces, and can store the feces until it is read to be eliminated. The sigmoid colon can also
http://kidshealth.org/kid/cancer_center/HTBW/digestive_system.html ( I didnt copy direct quotes, however I had used the idea of the beginning in my research on the digestive system to help the reader better understand the system)
Imagine you are eating a sandwich containing wheat bread, ham, lettuce, and Swiss cheese. Do you ever wonder where the nutrients go from all of the previous listed ingredients? Well, when a bite of this sandwich is taken, the mouth produces a saliva enzyme called amylase. This enzyme immediately goes to work by breaking down the carbohydrates that are in the bread. Once, the bite is completely chewed, the contents then are swallowed and go down the esophagus and begin to head towards the upper esophageal sphincter and the is involuntarily pushed towards the stomach. The next passage for the sandwich is to go through the lower esophageal sphincter; which transports the sandwich into the stomach.
During digestion, the body breaks down food into smaller molecules that could then be used by the body’s cells and tissues in order to perform functions. This starts off in the mouth with the physical movements of chewing and the chemical breakdown by saliva. Enzymes in the stomach break food down further after traveling from the mouth through the esophagus. The food from here then moves into the small intestine, where pancreatic juices and enzymes dissolve proteins, carbohydrates, and fibers, and bile from the liver breaks down fats into these small molecules. Any portion of the fibers or food that were unable to be broken down are passed from the small intestine to the large intestine, which is where the digestive tract transitions into the excretory tract, then the colon and out of the rectum. Any liquids that have been stripped of their nutrients by the body proceed from the stomach to the kidneys. In the kidneys, sodium ions (Na+), uric acid, and urea are exchanged with water, which moves urinary bladder and is excreted through the
Ingestion is a process of consuming any product alimentary into our body. By nature the ingestion occurs through the mouth. The food we are ingesting pass throughout the stomach, where stomach acids and enzymes acting. The muscular in our stomach squeezes and mixes the food. After the food into our intestine.
Crunch, Crunch, Crunch. As you munch on those first few Cheetos the digestion process begins in your mouth. Here, mechanical digestion begins to reduce the size of the Cheeto and mixes the food particles with saliva. The tongue helps mix and move the pieces of Cheeto throughout the mouth. The salivary glands in the mouth also contribute to the breakdown of the Cheetos in the mouth. They secrete amylase and mucus. The parotid glands begin chemical digestion on the Cheetos. It secretes a clear, watery fluid that is high in amylase. The enzyme, amylase, begins to breakdown carbohydrates into disaccharides. The other two salivary glands, the submandibular and the sublingual, secrete saliva containing mucus, which binds and lubricates the Cheeto particles for easy swallowing. Now the food has been formed into a bolus with the help of saliva, the tongue, and teeth. Next the bolus travels into the pharynx, where the epiglottis closes off the top of the trachea so no food can enter. Then it moves on to the esophagus, where peristaltic waves push the food toward the stomach. The food enters the stomach through the cardiac sphincter at the end of the esophagus.
The waste of my "ham" sandwich keeps going. The haustra removes any excess water that was not absorbed in my small intestine. It doesn’t have to do much work, because there is hardly any area for absorption. The waste then travels down my sigmoid colon to my rectum. There the waste, now called fecal matter (A.K.A. feces) is stored until I have enough to defecate through my anal sphincter.
Hi there. My name is Albert and this is my adventurous story of my journey through a human. I was a delicious gourmet hamburger with fresh ingredients like salad, mustard and an angus beef pattie. I was dumped into a family feed box labelled with a massive golden arched ‘M’. Now, I’m quite an intelligent burger, unlike my other food companions and I love studying about the fascinating human digestive system when I went to Burgerton College. I’m here to tell you first-hand about my digestive journey into the human body! Here is a map of the human digestive system for your convenience to pinpoint where I am in my journey as I am recounting my story.
The digestive system is very responsible for taking the whole food that people eat and turns them into energy and nutrients to allow the body to function, grow, and fix itself. The six primary processes of this system are ingestion of food, secretion of fluids and digestive enzymes, mixing and movement of food and waste throughout the body, digestion of food into small pieces, absorbing the nutrients, and the elimination of wastes. Ingestion is the first function of the digestive system, which is also known as the intake of food. The mouth is the reasoning for this process because through the mouth is the way food enters the body. The stomach and the mouth store food until your stomach is ready to digest the food that was just eaten. The reason why people can only eat a few times a day is because your body can only allow a certain amount of food depending on your body weight and type, and it cannot ingest more food than it can process at one time. The next step in Secretion, this happens in the course of the day. The digestive system secretes about 7 liters of fluid daily, but these fluids include saliva, mucus, hydrochloric acid, enzymes, and bile...