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...
... middle of paper ...
...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.
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#
Need Writing Help?
Get feedback on grammar, clarity, concision and logic instantly.Check your paper »
- The digestive system is a very important system in the human body. It is a group of organs that work together to turn food into energy and nutrients in the entire body. The food that was chewed in a humans’ mouth now passes through a long tube that is inside of the body that is known as the alimentary canal. The alimentary canal is made of the oral cavity, pharynx, esophagus, stomach, small intestines, and large intestines. Those few things are not the only important accessories of the digestive system there is also the teeth, tongue, salivary glands, liver, gallbladder, and pancreas.... [tags: turning food to energy]
1624 words (4.6 pages)
- ... The advantage to this reduction in food size, all along the digestive tract, is to maximise surface area and make it easier and faster for our bodies to absorb the nutrients. Mucus also in saliva keep the mouth and upper digestive tract lubricated. As we swallow food, it passes through the mouth and starts its journey down the pharynx and is worked down the oesophagus into the stomach. A small flap of skin called the epiglottis prevents the food from entering our respiratory system by covering the entrance to the larynx, so the food has to travel down the oesophagus.... [tags: food, nutrients, pharynx, oesophagus]
776 words (2.2 pages)
- The human digestion system is very complex. It starts with the mouth, salivary glands, pharynx, esophagus, stomach, liver, pancreas, gallbladder, small intestine, large intestine, then ends/exits with the anus. Each step is essential to the whole system. For example, the mouth chews food and mixes it with saliva produced by the salivary glands, and then the pharynx swallows chewed food mixed with saliva, this is followed by the food traveling through the esophagus to the stomach where the food gets a bath and mixes with acids and enzymes.... [tags: food, nutrition, stomach]
600 words (1.7 pages)
- Your food goes through a lot before it is fully digested by your body. Your body must take in all of the nutrients from your food to benefit and affect your body. Pablo, Jimmy Bob, Akihuro, and Darius ate fully loaded nachos and beer while celebrating at a World Series Party. All the food they have eaten will go through the path of the digestive system, to the blood in the circulatory system, and in this case, the alcohol will affect the central nervous system. The digestion system's job is to break down food into small molecules to be absorbed by villi in the small intestine.... [tags: the human digestive system]
527 words (1.5 pages)
- Over the course of time there have been many pondering questions and theories about everyday life. Using Chemistry, the study of matter, those questions have been able to be answered. From the mixture of gases in the air we breathe to the organic substance of plastic, chemistry can be seen everywhere. However, most people misunderstand the power of chemistry in our own bodies. How is it that a simple loaf of bread, once consumed, can turn into fuel for the human body. Using the digestive system and its many organs through the process of digestion and metabolism is how our bodies receive the energy it needs to continue.... [tags: Biology, Esophagus, Stomach]
1350 words (3.9 pages)
- The human digestive system is a bodily process made up of many systems, organs and substances that break down food both physically and chemically for use by the body. But what exactly is human digestion and what happens to food as it moves through the digestive system. “…[digestion] is a group of organs working together to convert food into energy and basic nutrients to feed the entire body” (Tim Taylor). There are three major bodily mechanisms that contribute to the process of digestion. The first mechanism is the breakdown of food, the second mechanism is the process of extracting nutrients from food, and the third mechanism is excretion, or the body’s natural waste system.... [tags: body, enzymes, organs]
1538 words (4.4 pages)
- ... The Process of the Digestive System This complicated process begins in the mouth as soon as you put the food in your mouth. Salivary amylase, which is found in saliva, starts the chemical digestion of starch by converting it from a polysaccharide to the disaccharide maltose. It functions best with a pH 6 or 7 which is slightly acidic. It then enters the pharynx and travels down the esophagus and into the stomach. The stomach is lined with strong muscular walls that contain millions of gastric glands.... [tags: foods, nutrients, waste]
1401 words (4 pages)
- The ideal purpose of the gastrointestinal or digestive system is to take the immense bolus’ of food made of lipids, carbohydrates, and protein and dissect them into particles tiny enough so that they can be consumed into the cardiovascular system of the body where the body can deploy on the the substances necessary for health and progression in the body. The way these bolus’ of food are dissected is by a process called mastication and the chemical changes of the gastrointestinal system and it’s enzymes.... [tags: pancreas, protein, acid]
525 words (1.5 pages)
- The Digestive System The digestive system is a group of organs that perform the process by which food, containing nutrients, is eaten and broken down into different components. This breakdown makes it possible for the digested material to pass through the intestinal wall into the blood stream. The digestive process contains many different steps that take place in many different organs.The first step of digestion begins at the mouth, where the food enters the mouth. Saliva is secreted from the salivary glands.... [tags: Anatomy Processes Eating Digestion Essays]
1263 words (3.6 pages)
- Purpose The digestive system prepares food for use by hundreds of millions of body cells. Food when eaten cannot reach cells (because it cannot pass through the intestinal walls to the bloodstream and, if it could would not be in a useful chemical state. The gut modifies food physically and chemically and disposes of unusable waste. Physical and chemical modification (digestion) depends on exocrine and endocrine secretions and controlled movement of food through the digestive tract. Mouth Mouth Food enters the digestive system via the mouth or oral cavity, mucous membrane lined.... [tags: essays research papers]
1034 words (3 pages)