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Anatomy and physiology note digestive system
Anatomy and physiology note digestive system
Digestive system organs
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Digestion is defined as the process of transforming foods into unites for absorption. The Digestive System is a complex network of organisms that have six major processes: The digestion of food, the secretion of fluids and digestive enzymes, the mixing and movement of food and waste throughout the body, the digestion of food into smaller pieces, the absorption of nutrients, and the excretion of wastes (Inner Body (1).)
Mouth- Digestion begins in the mouth. Physical actions, such as chewing, breaks food into small parts so it can be easily digested. Next, salivary glands secrete an enzyme called saliva to mix with food to start the breaking down of carbohydrates (WebMD (2).) From the mouth, food travels to the pharynx, or throat, by swallowing,
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This pear shaped organ contracts while we eat, then sends bile to the small intestine (WebMD (2).)
Pancreas- The pancreas creates a juice that breaks down carbohydrates, fats, and proteins. "The pancreas delivers digestive juice to the small intestine through small tubes called ducts" (NIH (5).) The pancreas is not considered part of the GI tract, but it is a necessary organ needed for the digestion and absorption of nutrients.
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
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Merely the smell of food can trigger saliva (LiveScience (3).) For example, the smell of fried chicken, with rice and gravy, and corn bread makes my mouth salivate. As stated earlier, the digestive system is a complex network that is necessary for the digestion and absorption of nutrients. When something is incorrect with the GI Tract, there is a variety of symptoms to know so, such as; abdominal pain, bloating, constipation, diarrhea, heartburn, vomiting, etc. Most of the symptoms can be avoided or reduced by watching what we eat. (LiveScience (3).) It is important to eat a variety of foods to maintain a well-balanced diet, drink water, and to exercise a minimum of thirty minutes a
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
Gastrointestinal tract (GIT) is the portal through which nutritive substances; vitamins, minerals and fluids enter the body. The digestive tract is more than 10 metres long from one end to the other. It is continuous starting from the mouth, passing through the pharynx and the oesophagus, to the stomach, the small and large intestines, ending in the rectum, and finally into the anus. The GI tract is divided into two main sections: the upper GI tract and the lower GI tract. Upper GIT includes the mouth, pharynx, oesophagus and stomach. The lower GI tract includes the small and large intestines and anus. The accessory organs of digestions are the gallbladder, liver and pancreas. Diseases that may occur in upper and lower GIT can be divided as oesophageal diseases, gastric diseases and intestinal diseases.
•Jose symptoms is derived from a disorder called Gastroesophageal reflux disease (GERD) occurring in the digestive system with the consumption of food, irritating the esophagus generally causing notable clinical symptoms such as the following: vomiting, chronic cough, angina, & regurgitation immediately after the consumed food. Jose's experience of the lump in his throat is caused by esophageal sphincter pressure.
As the digestive system breaks down your food, after it's broken down it turns into energy. Your circulatory system takes some the produced energy and transports it around the body, delivering it and other blood, nutrients, oxygen, and more compounds to every cell in your body. The digestive depends on the circulatory as much as it does vice versa because they need the blood, nutrients, and energy (broken down food) that was produced from both systems. Many digestive organs need to use about 30% of cardiac output. Both the digestive and circulatory systems get rid of unwanted or unneeded materials (waste) and feces (poop). The vial substances are absorbed by the small intestine, where it is put into the bloodstream, so it can be circulated around the body. The most important thing is that with no nutrients and circulation, there's no life.
The colon has four sections. The first section is called the ascending colon. It extends upward on the right side of the abdomen. The second section is called the transverse colon since it goes across the body to the left side. There it joins the third section, the descending colon, which continues downward on the left side. The fourth section is known as the sigmoid colon because of its S-shape. The sigmoid colon joins the rectum, which in turn joins the anus, or the opening where waste matter passes o...
Digestion have a function of breaking down all food into our body. Our body use all nutrients to help in the process been health and growth. Digestion supplied small molecules that will be absorbed into our bloodstream.
The main purposes of the colon are to absorb water and electrolytes to compact the feces for expulsion and expulsion of the feces. The length of the colon is roughly one to one and a half meters and the diameter spans from two to eight centimeters. The colon is made up of seven sections. These sections are the cecum, the ascending colon, the transverse colon, the descending colon, the sigmoid colon, the rectum and the anal canal.
The small intestine empties into the cecum. The cecum along with the large colon make up the large intestine. Digestion in the large intestine occurs by bacteria and protozoa. arg.gov.sk.ca - arg.gov.sk.ca - arg.gov.sk.ca - arg.gov.sk.ca - arg.gov The energy content found in feeds and how it is measured in Kilocalories (kcal).
The digestive system otherwise known as the gastrointestinal tract (GI tract) is a long tube which runs from the mouth to the anus. It operates to break down the food we eat from large macromolecules such as starch, proteins and fats, which can’t be easily absorbed, into readily absorbable molecules such as glucose, fatty acids and amino acids. Once broken down, these molecules can cross the cells lining the small intestine, enter into the circulatory system and be transported around the body finally being used for energy, growth and repair.
The whole purpose of your digestion system is to break down and absorb the energy and nutrients it needs from the food you eat. The sandwich, strawberries, and orange juice you have just consumed is going through this process right now! The process of digestion begins with ingestion, this is when you take a bite of what you have planned to eat. When you took a bite of your sandwich and strawberry slices you were essentially beginning the process of digestion. Second comes the job of your digestion, which is a much more time-consuming and complex process for your digestive system. It begins once you have began chewing your food. There are two known types of digestion, these include Mechanical digestion, which is when you “physically break down the food into smaller pieces”, for instance chewing a burger and having it result in several chunks, and Chemical Digestion which is when you chemically break down your food, such as eating a slice of br...
The organs of the digestive system are in two different groups. One is the alimentary canal known by as the gastrointestinal tract. It is a muscular tube that digests the food and breaks it down and absorbs the digested fragments in the lining of the blood. The organs in the gastrointestinal tract are the mouth which the food comes into the body and out of the body by peristalsis. The pharynx called the throat which receives the food; this is where swallowing occurs, while the esophagus transports the food to the stomach. The esophagus is a muscular tube that food is pushed into by contractions caused by peristalsis. Also food is kept in the stomach by the esophageal sphincter (LES), which opens to let food pass into the stomach and closes to keep it there. Now the stomach it is the storage system and grinder of the digestive system. It secretes acids and enzymes that break down the food. Those that cannot be broken down are passed through the small intestine to be taken care of. The small intestine is made up of three sections the duodenum responsible for the breakdown of the food, jejunum, and ileum which are responsible for the absorption of food; it also has enzymes that also break down food released by the pancreas and liver. The large intestine is where the waste goes to the anus. The accessory digestive organs are the teeth, tongue, gallbladder, salivary glands, pancreas, and liver. The teeth help to chew the food while the tongue helps to reposition the food to teeth to be chewed. The salivary glands are associated with the section of saliva which cleans the mouth, dissolves food chemicals to be tasted, moisten foods, and enzymes to break down starchy food. The pancreas, liver, gallbladder are responsible for the secretio...
There are many similarities and differences between organisms of different species’ digestive systems. The digestive system of an organism is the system that makes food absorbable into the body. The food that the organism takes into their body is broken down through an organ to make it easier for the body to take the nutrients it needs from the food. The food that is broken down in the digestive system is then turned into energy for the organism.
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. After the stomach, the liver, pancreas, and gallbladder produce, stores, and releases bile and bicarbonates. Bile is produced in the liver and aids in digestion and absorption of fat while the gallbladder stores bile and releases it into the small intestine when needed. Following the process into the small intestine, this is where nutrients will be absorbed into the blood or lymph (most digestion occurs here). Next is the large intestine this is where water and some vitamins and minerals are absorbed. Finally, it is the end of the road, the anus. At...
The small intestine a narrow tube and can be up to three and a half times the dogs body length. It is the main site of enzymic digestion, it receives the acidic chyme from the stomach and it absorbs the digested food product (Aspinall and Cappello, 2009).
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...