The lingual lipase, found in saliva, plays a minor role in breaking down fat. In the stomach, the gastric lipase converts some fat into a fatty acid or diglyceride, a glycerol with only two attached fatty acids. In the small intestine, most fat is digested. The pancreas releases pancreatic lipase. This lipase converts fat to
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.
Parts of the nervous and circulatory systems also play major roles in the digestive system. The large, hollow organs of the digestive tract contain a layer of muscle that enables their walls to move. The movement of organ walls can propel food and liquid through the system and also can mix the contents within each organ. Food moves from one organ to the next through muscle action called peristalsis. The first major muscle movement occurs when food or liquid is swallowed.
(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.
Rose Dummgian P5 explain the dysfunction in relation to water balance and its possible treatments Kidneys “In humans, each kidney has a bean-shaped appearance with a convex and concave side.” The kidneys are bean-shaped organs and are about 11cm long and 6cm wide and 3cm thick. They are embedded in, and held in position by a mass of fat. The concaved area of the kidney faces the hilum which is the mid-line of the body. The renal vein and ureter vein surface from the kidney, at the hilum the renal artery goes into the kidney. The kidney is surrounded by a capsule membrane, each of these membranes are topped by the conical adrenal gland.
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,
Sugar Is soluble in water. Glucose and fructose are the sugar, Starch Is Insoluble in water and mostly found In rice, wheat and potato. Excess carbohydrate In the body Is stored In the liver In the form of glycogen. Cellulose maintains healthy digestive system. Fats- The fats are the compounds of carbon, hydrogen and oxygen.
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
Excretory System Parts and their Functions The Liver-The liver detoxifies and breaks down chemicals, poisons and other toxins that enter the body. For example, the liver transforms ammonia (which is poisonous) into urea (which is then filtered by the kidney into urine). The liver also produces bile, and the body uses bile to breakdown fats into usable fats and unusable waste. Bile-After bile is produced in the liver, it is stored in the gall bladder. It is then secreted within the small intestine where it helps to break down ethanol, fats and other acidic wastes including ammonia, into harmless substances.
Fibre and other digested foods as they pass through the body do not change very much until it reaches the large intestine, the process of excretion after the reaching of the large intestine depends on the type of Fibre is consumed. There are two types of Fibre: soluble Fibre and insoluble Fibre. Soluble Fibre is a Fibre that is quite helpful to nutrients, as it makes energy from consumed substances leave the body at a smoother and steadier pace. Preventing tiredness, hunger pains, lack of energy and strength. Soluble Fibre when passing through the large intestine absorbs the water turning the faecal matter much softer, allowing the waste to pass through the body quickly.