The monosaccharides are them absorbed into the bloodstream. From blood, the monosaccharides are carried to the liver and converted into glucose and then stored in the liver or sent back out to feed the individual cells. Any fiber continues to the large intestine where some is metabolized by bacteria, but most is excreted. Fat From the mouth, chewing food breaks it down to a degree. The lingual lipase, found in saliva, plays a minor role in breaking down fat.
(3) 5. Gallbladder: The gallbladder stores bile when there is no food to be digested and releases the bile into the duodenum when fatty foods enter it. (3) 6. Pancreas: The digestive function of the pancreas is to produce enzymes that breakdown all types of digestible foods. A3: Mechanical digestion is the act of physically breaking down food into smaller pieces to aid with chemical digestion.
When these two senses react to food the salivary glands begin their work by creating saliva. Saliva is created for mouth lubrication and to help soften the food to slide through the esophagus. When the food enters the mouth, the tongue moistens it with saliva and moves it around. Therefore, the teeth can break down the food. This process converts the food into bolus.
The first major muscle movement occurs when food or liquid is swallowed. Although you are able to start swallowing by choice, once the swallow begins, it becomes involuntary and proceeds under the control of the nerves. Swallowed food is pushed into the oesophagus, which connects the throat above with the stomach below. At the junction of the oesophagus and stomach, there is a ring like muscle, called the lower oesophageal sphincter, closing the passage between the two organs. As food
The small intestine is made up of three sections that help to break down food using enzymes released by the pancreas and bile from the liver. This stage of digestion is where the chemical digestion begins. These enzymes can worth either on the surface or inside the epithelial lining. The ileum is the remainder of the small intestine that is used
The saliva which is contained in the mouth which is produces by the salivary glands begins to digest the food before the food is even swallowed. Saliva and the other chemicals which are produced along the way help speed up the digestive process which is called digestive enzymes. The mouth which is also known as the oral cavity is a specialized organ which receives food and breaks it into smaller pieces. The mouth is changed mechanically when biting and chewing food. In a humans mouth there are teeth and within a human they are four types of teeth which are used for different functions such as the incisor teeth are for biting and are found are the front of the mouth.
Produces essential proteins and clotting factors for the blood and regulates metabolism and cholesterol. Gall Bladder – Stores bile secreted by liver. Bile is used to help dissolve fats in the small intestine. Pancreas – Functions both as an exocrine gland and an endocrine gland. Exocrine portion secretes digestive enzymes carried to the duodenum.
As the teeth do their work, saliva mixes with the pieces of me, making me soft and moist. The saliva contains a chemical called salivary amylase, which starts breaking down complex carbohydrates, and another called mucin, which helps to soften the food. The amylase enzymes turn the starch molecules found in me into glucose. The glucose is used by cells to give people energy. oklahoma4h (2015) ptonthenet (2015) bbc.co.uk (2015) The tongue which is a muscle, works with me and saliva by pushing me around the mouth while you chew with your teeth.
The small intestine comprises of the duodenum, jejunum and the ileum. Most if not all nutrients are absorbed in the stomach and small intestine. The remaining water and waste products then pass into the large intestine from where it leaves the body through the anus. The movement of food through the main digestive tubes is maintained by a series of muscular
Extrinsic nerves release the chemicals acetylcholine and adrenaline. Acetylcholine increases the pressure exerted by the muscle layer of the digestive tract for optimum passage of food and fluid through the digestive tract, this chemical also encourages the production of digestive juice from the stomach and pancreas. The chemical adrenaline slows or stops digestion. Intrinsic nerves are located in the walls of the esophagus, stomach, small intestine and colon and when stretched by food release substances to speed up or delay production of digestive juice or movement of food by the digestive organs A major component in digestion are enzymes, these are present in most of the alimentary organs, they are made of protein and speed up chemical reactions in the body while maintaining normal cell temperature. Mouth – solid and liquid food are taken into the body via the mouth; saliva is secreted by three pairs of salivary glands: Saliva contains water, mineral salts, lysozyme, immunoglobulins,