...Human Digestion Your Name Here SCI/241 July XX, 20XX Your Instructor Here Human Digestion In human digestion all food enters the body by way of the mouth. The mouth is responsible for chewing the food into a softer consistency before it enters the stomach. Before you even take the first bite of food the salivary glands begin to produce saliva. The chewed food mixes with the saliva to form what is known as a bolus. This bolus is then pushed into the pharynx by the tongue and swallowed. The epiglottis, a flap to keep food from entering the lungs, closes and the food moves into the stomach by way of the esophagus. Once the bolus enters the stomach it is then mixed with stomach acid. The stomach acid reduces the bolus to a further liquefied food mass that is known as chyme. It takes anywhere from 2 to 6 hours for the chyme to be completely emptied from the stomach and into the small intestine. Once the chyme enters the small intestine, the biggest portion of digestion takes place. This is where nutrients are actually absorbed into the body. There are three parts to the small intestine, the duodenum, jejunum, and the ileum. This is where secretions from the gallbladder, liver and pancreas help to break down food. Anything that is not absorbed into the body then enters into the large intestine. The large intestine is also the location of the colon and rectum. Food that enters into the large intestine is usually drained of what water is left in it along with vitamins and minerals...
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...Human Digestion Summary SCI/241 December 6, 2014 Human Digestion Summary Digestion is the action in which the body breaks down food into molecules that can be used for substance to nourish the body. There are different organs in the body that are involved in the digestion process. These organs include; the mouth, the esophagus, the stomach, small intestines, liver and large intestine. Each one of these organs plays a significant you in the body’s digestion process (Shifko, 2014). The digestion process starts before the food actually enters the mouth. The smells that are inhaled from the food cause the mouth to produce saliva, which contains the compounds and enzymes that start to break down the food after it has entered the mouth. The food is then chewed down in to small particles so that the saliva and the enzymes can go to work. After the food is chewed it is then swallowed and starts to pass down the esophagus. According to the Cleveland Clinic, the esophagus is a muscular tube that transports the food that has been chewed to the stomach. In order for the food to be carried down the esophagus and to the stomach there are a series of contractions performed by the esophagus, this process is known as the peristalsis (Shifko, 2014). Once in the stomach, there are two different functions that must take place during the digestion process. The stomach resembles a large pouch with muscular walls. The wall of the stomach is where the food is held and it also acts...
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...Assignment: Human Digestion Summary Suehaydee Figueroa SCI/241 NUTRITION Professor Tiera Pack Lawyer March 21, 2013 The human digestive system is a complex series of organs and glands that processes food. In order to use the food we eat, our body has to break the food down into smaller molecules that it can process; it also has to excrete waste. Most of the digestive organs (like the stomach and intestines) are tube-like and contain the food as it makes its way through the body. The digestive system is essentially a long, twisting tube that runs from the mouth to the anus, plus a few other organs (like the liver and pancreas) that produce or store digestive chemicals. The start of the process starts with the mouth. The digestive process begins in the mouth. Food is partly broken down by the process of chewing and by the chemical action of salivary enzymes. These enzymes are produced by the salivary glands and break down starches into smaller molecules. On the way to the stomach: the esophagus - After being chewed and swallowed, the food enters the esophagus. The esophagus is a long tube that runs from the mouth to the stomach. It uses rhythmic, wave-like muscle movements (called peristalsis) to force food from the throat into the stomach. This muscle movement gives us the ability to eat or drink even when we're upside-down. In the stomach - The stomach is a large, sack-like organ that churns the...
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...Human Digestion The human body goes through many stages in order to fully digest food. The amount of time it takes to digest food varies from person to person. it also depends on many factors, including its fat and protein content, the degree of muscle action of the emptying stomach and the next organ the stomach contents with pass through. The entire process can take from 24 to 72 hours to complete. Foods that contain high amounts of fiber and probiotics helps to promote the digestion process. For example, papaya, pineapple, avocado and chili peppers all aide in digestion. Digestion occurs differently depending on the part of the food is in. Digestion first begins in the mouth. Once food enters the mouth, saliva is activated from the salivary glands. Saliva helps by moistening food, breaking down molecules, and it helps to prevent tooth decay. Then, the chewing begins. In addition to saliva, it helps to mix the food around and break them into smaller pieces so swallowing is easier p(g. 71, 2012). In the stomach, food is mixed together by acidic stomach secretions in order to form a liquid-like food mass that is also known as chyme. Thanks to gastric juice , most of the bacteria in your food is killed and protein be digested. Some substances are digested while in the stomach, but there aren't many substances that can be absorbed in this part of the body (pg. 73, 2012). The digestion process in the small intestine takes place...
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...SCI 241 Human Digestion University of Phoenix (Axia) Janelle Brown What is the digestive System? “Every morsel of food we eat has to be broken down into nutrients that can be absorbed by the body, which is why it takes hours to fully digest food. In humans, protein must be broken down into amino acids, starches into simple sugars, and fats into fatty acids and glycerol. The water in our food and drink is also absorbed into the bloodstream to provide the body with the fluid it needs. The digestive system is made up of the alimentary canal and the other abdominal organs that play a part in digestion, such as the liver and pancreas. The alimentary canal (also called the digestive tract) is the long tube of organs — including the esophagus, the stomach, and the intestines — that runs from the mouth to the anus. An adult's digestive tract is about 30 feet long”. (www.kidshealth.org) In other words the Digestive System prepares food for use by all the body cells. The digestive process begins the mouth by chewing the food which is just a partial breakdown of the food. After the food is chewed and swallowed the food goes into the esophagus which is a tube that connects the mouth to the stomach making wave-like muscle movements to help get the food down into the stomach. The stomach then churns the food and submerges it in an acid called gastric acid; when the food gets to the stomach it is only partially digested and mixed with chime which is a stomach acid. When the food leaves...
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...HUMAN DIGESTION By Amanda Boerste SCI/241 Madhuri Vemuri Digestion is the complex process of turning the food you eat into the energy you need to survive. The digestion process also involves creating waste to be eliminated. The digestive tract (or gut) is a long twisting tube that starts at the mouth and ends at the anus. It is made up of a series of muscles that coordinate the movement of food and other cells that produce enzymes and hormones to aid in the breakdown of food. Along the way are three other organs that are needed for digestion: the liver, gallbladder, and the pancreas. The oral cavity both physical and chemical digestion takes place in the mouth. Saliva is secreted to moisten food, protect the mouth from abrasions, buffer against acids in food, kill some forms of bacteria, and begin carbohydrate digestion with the enzyme salivary amylase. Tongue is used for taste, manipulates food while chewing and prepares food for swallowing by forming it into a ball. Pharynx is commonly called the throat. The intersection of the glottis and opening to the esophagus (gullet) is found here. The epiglottis is a flap that closes the glottis when the act of swallowing occurs. Esophagus connects the pharynx with the stomach. Peristalsis, wave-like contractions of the smooth muscles push food down toward the stomach. Connects with the stomach at the cardiac sphincter. The stomach is a J shaped expandable organ located on the left side of the abdominal...
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...Human Digestion The salivary glands start the digestive process at the sight and smell of food. Once the food goes into the mouth it is moistened by saliva and broken down by our teeth. You are able to start swallowing by choice, but once the swallow begins, it becomes involuntary and proceeds under the control of the nerves. The food is then turned into a bolus. A bolus is a roundish lump, especially chewed food. Next the food is moved to the pharynx then to the esophagus which transports the food from the mouth to the stomach. Once the food reaches your stomach and it is broken down by acid. This acid is used to convert the food into chyme. Chyme is a fluid used to help the food pass from the stomach into the small intestine. Once the food has reached the small intestine nutrients from the food you have eaten are absorbed by the blood. The small intestine is broken into three parts duodenum, jejunum and the ileum. After passing through the small intestine food passes into the large intestine. The large intestine removes some of the water and electrolytes, such as sodium from the food. The large intestines main role is to eliminate water from the undigested matter and solid waste that can be excreted. The colon and rectum are also located in the large intestine and the remaining solid waste goes out of the body through the anus. Teen health. (). Retrieved from http://kidshealth.org/teen/your_body/body_basics/digestive_system.html# (National Digestive Diseases...
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...Checkpoint: Human Digestion Dwayne Johnson The process digestion begins when food is taken into the mouth, moistened by saliva, chewed, and transformed into a bolus; passes in to the pharynx where it is swallowed and enters the esophagus; the pharynx connects to the esophagus and the esophagus connects to the stomach. The bolus passes through the esophagus and enters the stomach; mixed with acid secretions and transformed into chyme; food is partially digested in the stomach; chyme usually empties the stomach in two to six hours. The majority of digestion and nutrient absorption takes place in the small intestine; the liver, pancreas and gallbladder are located near t the stomach and contribute to the digestion process; secretion of bile from the liver and gallbladder helps with digestion and absorption of fat, while digestive enzymes and bicarbonates secreted from the pancreas helps the digestive process. Then it into the large intestine through the sphincter, additional absorption of water and some vitamins and minerals occur in the colon. Materials not absorbed in the colon or excreted from the body as waste products in the feces through the anus. The mouth an external opening of the digestive tract includes, teeth, tongue, saliva glands, and epiglottis The small intestine, a very long tube, divided into three parts, the duodenum, jejunum, and ileum. Its lining is very large and contains folds (villi) finger like projections which contains a tiny lymphatic vessel (lacteal) ...
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...Human Digestion Jenny Richardson SCI/241 May 11, 2014 Julienne Seed Human Digestion Complete stomach emptying can take up to five hours, Dr. Richard Bowen of Colorado State University explains. Digestion begins in the mouth, where your teeth break up large food particles and enzymes in saliva start to break it down. In the stomach, food mixes with strong acidic gastric juices and enzymes that break down protein. This reduces food to chyme, a porridge-like mass of partially digested food. Food does not necessarily exit the stomach in the same order that it arrived, since different nutrients take varying times to exit. Carbohydrates leave the stomach the quickest, followed by protein and fats. The stomach absorbs only a few nutrients; alcohol is one. Most digestion takes place in the small intestine. It takes up to three hours for 50 percent of your food to traverse the small intestine, according to Bowen. Bile helps break down fat in the small intestine. Two types of movement aid in transit through the small intestine: segmentation contractions, which mix the chyme to break it down, and peristalsis, which moves the chyme through the small intestine. The chyme touches the sides of the intestine, where absorption occurs. Carbohydrates absorb the quickest, with simple sugars leaving the small intestine first; complex carbohydrates must be broken down into simple sugars and take longer. Fiber, a component of plants, is not absorbed at...
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...The sight and smell of food begins the digestion process with the salivary glands. Once food enters the mouth it is moistened by the saliva and grounded down by the teeth. The food transforms into a bolus. The bolus leaves the mouth and moves into the pharynx, where it is swallowed. The bolus moves from the pharynx to the esophagus, which moves the food to the stomach (University of Phoenix and Axia College, n.d.). The stomach is an organ in the digestive tract that mixes food and secretes gastric juices. Once the bolus reaches the stomach, it mixes with the acid secretions to transform into chime, a semi liquid food mass. Food is partially digested in the stomach, and chime empties from the stomach in two to six hours, depending on the size and type of meal ingested (University of Phoenix and Axia College, n.d.). After chime leaves the stomach it enters into the small intestine, which is divided into three parts known as the duodenum, the jejunum, and the ileum. Here the majority of digestion and absorption of nutrients from food takes place. Once food is in the small intestine, bile from the liver and gallbladder help with the digestion and absorption of fat, while enzymes and bicarbonate from the pancreas aid in the digestive process (University of Phoenix and Axia College, n.d.). Materials not absorbed in the small intestine enter the large intestine through the sphincter. The sphincter keeps material from the large intestine from re-entering the small intestine...
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...Checkpoint: Human Digestion Pamela Roberson SCI 241 02/13/2012 Tara Deters The digestive process starts with saliva. Saliva begins with the scent or sight of food. Food enters the digestive system starting at the mouth. Food is broken into smaller pieces by your teeth. The broken up pieces of food mix with saliva and break down into a substance called bolus, which is a ball of chewed food. Bolus then passes through the pharynx, which helps us swallow, into the esophagus and into the stomach. The stomach further breaks down the bolus with highly acidic stomach secretion and is turned into a semi liquid mass called chyme. This process could take 2 to 6 hours depending on the amount of food and type of food. The chyme then moves to the small intestine. The small intestine is 20 feet long and takes 3 to 5 hours for chyme to move through the small intestine. This is where most of the nutrients are absorbed. While moving through the small intestine additional secretions are produced from the liver, gallbladder and pancreas to assist in the digestive process. The chyme that is not absorbed is then deposited into the large intestine through a sphincter. The sphincter prevents any substances from reentering the small intestine. The large intestine is 5 feet long and the break down process can take 24 hours. The large intestine is the last chance to absorb any leftover nutrients. As chyme travels through the colon some left over water, vitamins and minerals are absorbed. Any substances...
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...The food first begins the digestion process in the mouth. What the mouth does is use the teeth to masticate the food. Then it travels into the pharynx where the food is ingested. After this process occurs then the food is known as bolus. The bolus travels from the pharynx into the esophagus. The esophagus linked to the stomach. The bolus then is joined together with acid so that it can begin to be broken down from a solid into a more liquid state. This process can last anywhere from two to six hours. The process in the stomach can be helped by the following organs liver, gallbladder and pancreas. The organs release bile to make the process go by quicker. After this occurs it is then called chime and travels in to the small intestine where the major part of digestion happens. In the small intestine the nutrients from the food begin to absorb. This is an important process because the body uses the nutrients to function properly. What is left over after the absorption process happens will then descend into the large intestine. The large intestine also absorbs nutrients that the small intestine has forgotten. The colon that is linked to the large intestine will finish off the job. Whatever is left after that then becomes fecal matter and then will be removed from the body. How it is removed is through the anus. References: Grosvenor, M. B., & Smolin, L. A. (2006). Nutrition: Everyday choices. Hoboken, New Jersey: John Wiley &...
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...Human Digestion Summary n 9/21/2014 SCI-241 Simyka Carlton In my human digestion summary I will be going over some factors and the amount of time that it can take for our food to travel through our digestive track. I’m also going to be telling you about how digestive can occur in some parts of our digestive system. I’m also going to be letting you know what kinds of foods are good to eat to help to improve our digestive system. Human digestion summary Digestion can take a very specific path which starts from beginning to the end. This is when the food that we have ate then starts to move from our moth to our stomach in a matter of minutes. This is when our tongue will help move the food that we eat move to the teeth. Which then while we chew our food it is then mixed with saliva. That’s when the saliva is then produced by our saliva glands to start the first part of the digestion. When the food is then mixed with our saliva that’s when the food then comes to a bolus. The bolus is then swallowed in the phyarynx and then moves into the esophagus. This is when it then takes place in our stomach while in the esophagus that’s when the food will pass the epiglottis. The epiglottis is a flap that will help to prevent the bolus from being taken to our lungs. When it comes to the size of our mouth its five inches to one foot...
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...Human Digestion Summary Write a 350- to 700-word summary describing the path food follows through the digestive system. Address the following questions in your summary: • What factors affect the amount of time it takes for foods to travel through the digestive tract? • How does digestion occur in each of the following parts of the digestive system? o Mouth o Stomach o Small intestine o Large intestine Note. Include descriptions of other organs or components of the digestive system. • How do proteins, fats, and carbohydrates break down in the digestive system? • What types of food help with digestion? Salivary glands begin the digestive process at the sight and smell of food. After food enters the mouth and is moistened by saliva and chewed by the teeth, it transform into a bolus. Once the bolus leaves the mouth, it moves into the pharynx, where it can be swallowed. The bolus then move from the pharynx into the esophagus, which connects the pharynx to the stomach. Food is partially digested in the stomach; chyme usually empties from the stomach in 2 to 6 hours. The timeframe is determine by the size and type of meal ingested. Through the liver, gallbladder, and pancreas are located in close proximity to the stomach, they contribute to the digestive process once the chyme reaches the small intestine. The majority of the digestion and absorption of nutrients from food takes place in the small intestine. The small...
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...J0hn smith University of Phoenix Human Digestion Summary Sc1241 Describe digestion in the mouth Digestion of food in the mouth start the process from the time the food touches your lips down to your stomach. When you have food in your plate and ready to eat, first thing that happens you see the food, then you can smell the food depend of what kind of food it is. Then you put the food in your mouth your saliva glands begin the digestive process as it moistened by saliva, the tongue helps mixed the food with saliva and ids in chewing by moving the food between teeth and masticated by the teeth, then the food transform into a bolus which is a mass of food that has been chewed at the point of swallowing. Once the bolus leaves your mouth, the food moves into the pharynx so it could be swallowed, then the bolus moves into the esophagus, which connects to the stomach. Describe digestion in the stomach Digestion in the stomach start after the bolus passes the esophagus and reaches the stomach where the bolus mixed with acid secretions that transform the bolus into a semiliquid food mass that is call chime. Depend on the size of the food you ate or the kind of food you ate your stomach digest the chime in two to six hours. Describe digestion in the small intestine In the small intestine is where the majority of digestion and absorption of nutrients from food happens and it is divided in three parts, known as the duodenum, the jejunum and the ileum. Secretion...
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