The Digestive System 1.1
The digestive system is comprised of a group of organs known as the alimentary canal, which is one continues tube that runs from the oral cavity to the anus. The second set of organs that make up the digestive system are the Accessory organs.
The digestive system has six main functions: ingestion, secretion, mixing and movement, digestion, absorption, and excretion of food (Tortora & Derrickson, 2009).
Alimentary canal
Organ Structure Function Diagram
Mouth The mouth is made up of the checks hard and soft palates, internally and externally covered with skin. The mouth is where food enters the body and the process of digestion starts via mechanical and chemical digestion. oesophagus The oesophagus is a long tube
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Salivary Glands The salivary glands surround the mouth. There are 3 sets of salivary glands. The saliva moistens the food to lubricate it as it passes through the mouth; it also begins the process of chemical digestion.
Liver The liver is accessory organ of the digestive system which is triangle in shape. The liver is located to the right of the stomach and above the small intestine. The main functions of the liver in digestion are production and secretion of bile into the small intestine.
Gallbladder The gallbladder is a pear shaped organ located just behind the liver. The gallbladder stores the bile and recycles any excess bile from the small intestine.
Pancreas The pancreas is a fairly large gland which is about 15cm in length. The head is connected to the duodenum. The pancreas secretes many different digestive enzymes into the small intestine via the duodenum to aid in the completion of chemical digestion.
(Tortora & Derrickson, 2009)
Diagrams from: http://www.innerbody.com/image/digeov.html
Enzyme Function of the liver and pancreas 1.2
The chyme arrives in the duodenum and the pancreas releases pancreatic juices packed with enzymes that break down fats, carbohydrates, and proteins these are: Pancreatic lipase, amylase, and protease. Bile is then realised by the gall bladder - this bile is produced by the liver, with the gall bladder being the bile duct - this helps to breakdown
The pancreas and the gall bladder are two of the most important organs of the digestive system. Together they help with the digestion process. The pancreas and the gall bladder work together with different functions, the gallbladder stores bile that comes from the liver so that it can be used for meals later on and the pancreas produces pancreatic juice that contains digestive enzymes that help break down food. In order to maintain the body stable and healthy, we need the help of the gallbladder and pancreas to function correctly. Which is why, we, as humans should take care of our organs. ( Tim Taylor, Pancreas and Gall Bladder)
The digestive system absorbs the minerals and nutrients from the foods that have been eaten. The break down of food beings in the mouth, where the
The pancreas is responsible for secreting digestive enzymes into the duodenum. These enzymes then break down protein, fats and carbohydrates. The pancreas is also responsible for making insulin and secreting it directly into the bloodstream. The livers main function within the digestive system is to process the nutrients which are absorbed from the small intestine. Bile is secreted
The common bile duct originates in the liver and the gallbladder and produces another important digestive juice called bile. The pancreatic juices and bile that are released into the duodenum, help the body to digest fats, carbohydrates, and proteins. Endocrine Function: The endocrine component of the pancreas consists of islet cells that create and release important hormones directly into the bloodstream. Two of the main pancreatic hormones are insulin, which acts to lower blood sugar, and glucagon, which acts to raise blood sugar. Maintaining proper blood sugar levels is crucial to the functioning of key organs including the brain, liver, and kidneys.
The organs needed for the dissection from the digestive system contains the liver, stomach, the small and large intestines, also the tongue. The function of the liver is to clean and detoxify the blood but also to store vitamins and iron. The function of the stomach is to receive food from the esophagus and mix food with the gastric juices. Small intestines extend from the stomach to the large intestines. It is responsible for absorbing most of the nutrients into the bloodstream.
The digestive system is made up of all different organs which starts at the mouth and finishes at the anus but on the way involves all other organs; these organs help to break down and absorb the food.
The digestive system is a group of organs working together to convert food into energy and basic nutrients to feed the whole body. To achieve the goal of providing energy and nutrients to the body, six processes take place in the digestive system.
The bile moves down the common bile duct, through the pancreatic duct and then into the duodenum and through the rest of the intestine.
The digestive system are organs converting food into energy and basic nutrients to feed the entire body.
Food is digested by being broken down, by a variety of enzymes, into useful nutrients, which are transported around the body to places where they can be of use, and into waste products, which are excreted from the body. The digestive system is made up of a number of organs, oesophagus, stomach, liver, pancreas, gallbladder, and small and large intestines, these are then separated into the digestive tract and the digestive organs. The digestive tract is, essentially, a single continuous tube that begins at the mouth and ends at the anus, in a fully grown adult it is approximately seven metres long. Food travels through the digestive tract and the digestive organs produce the enzymes and chemicals that are responsible for
The bile emulsifies fats and neutralizes acids in partly digested food. A muscular valve in the common bile duct opens, and the bile flows from the gallbladder into the cystic duct, along the common bile duct, and into the duodenum.
The digestive system is the process that involves the mouth, esophagus, stomach, small intestine, large intestine and rectum. For the body to function, the body`s cells needs energy and that energy will come from the food we eat. All the food we eat contains nutrients, carbohydrates, glucose, lipids, protein and many more other substances. The only way the body can absorb and convert these nutrients into energy to our cells is through breaking down the large molecules into smaller pieces and moist by the action of enzymes.
The gall bladder is an accessory organ to the body. The gallbladder stores the bile that is made by the liver to send to the digestive tract. It is located under the liver, so they can work together in the digestive process. The structure of this organ can be described as hollow and resembles the shape of a pear when full. When the organ is empty, it can resemble more of sac. It is a very small organ, located closer to the right lobe of the liver. The gallbladder also sits closely in relation to the pancreas, located slightly off to the right-hand side of the organ. In location to the body, you can describe the organ as being within the in the upper right quadrant of the abdomen. The gallbladder’s only enzyme is the bile that is created by
The digestive system is very important in digesting food and breaking it down so it can be digested easily. The digestive system turns food into energy. Throughout the process there are nutrients which are absorbed. There are many things that contributed to the digestive system such as the mouth which produces saliva which helps to break down food and nutrients such as carbohydrates with the help of an enzyme called amylase. The major food groups which are called macro nutrients include carbohydrates, proteins and fats. All of these nutrients play an important role in the body. There are also many micro-nutrients which include vitamins and minerals which provide the body with health and well-being. The digestive system is made up of the mouth, which includes the teeth (the teeth are used to cut and grind food into smaller pieces, they contain blood vessels and nerves), tongue (the tongue is a muscle that has a rough surface including the taste buds), salvia glands (they produce salvia which moistens the food to make is easier to digest), the pharynx (this helps the food travel to the stomach, the pharynx also plays an important role in the respiratory system. It also contains 2 different flaps to separate the 2 functions), esophagus (this connects the pharynx to the stomach and transports chewed food to the stomach), stomach (this is a muscle that is
The Liver is the body's largest gland, weighing about three to four pounds. It is located beneath the diaphragm in the right upper quadrant (RUQ) of the abdominal cavity. Without the liver, our bodies would be poisoned and unfit for us to do anything at all. It is a metabolically active organ responsible for many vital life functions. The primary functions of the liver are: Bile productions and excretion. Excretion of bilirubin, cholesterol, hormones, and drugs. Metabolism of fats, proteins, and carbohydrates. Enzyme activation. Storage of glycogen, vitamins, and minerals. Synthesis of plasma proteins, such as albumin, and clotting factors. And blood detoxification and purification.