Digestive enzymes come from the pancreas through the excretory ducts‚ while bile acids come from the liver via the bile ducts. The digestive enzymes and the bile acids will allow to transform the chyme‚ liquid including food pre-digested by the digestive juices coming from the stomach. Absorption: For its activity‚ the body will absorb certain elements such as carbohydrates
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DIGESTION Cooking vs. Digestive Processes Cooking Processes: Grilling Microwaving Frying Roasting Barbeque Boiling Steaming Poaching Digestive Processes: Ingestion Propulsion Mechanical digestion Chemical digestion Absorption Defecation Salivary Digestion SALIVARY DIGESTION Salivary Glands the salivary glands are a collection of accessory organs surrounding the mouth that secrete a fluid called saliva. Saliva consists of 99.5 % water and 0.5 % solutes. medium for dissolving
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They type of body cavity coelomate: pericardial cavity Body organs make up the visceral mass and are protected by the mantle which secretes the shell. They have an open circulatory system Clams shells are thick while mussels are usually thin. Mussels live attached to something while clams live in the sand. Clams live alone‚ while mussels are usually in large groups. The oldest part of a clam’s shell is called the umbo and is located at the hinge of the clam. The rings on a clam’s shell indicated
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1) The mechanical and chemical receptors that control digestive activity are located in the walls of the GI tract organ. (854) 2) The chemical and mechanical processes of food breakdown are called digestion. (852-853) 3) The function of the hepatic portal circulation is to collect absorbed nutrients for metabolic processing and storage. (881) 4) When we ingest large molecules such as lipids‚ carbohydrates‚ and proteins‚ they must undergo catabolic reactions whereby enzymes split these
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DIGESTION OF CARBOHYDRATES Digestion of carbohydrate begins in the mouth‚ with the secretion of the enzyme salivary amylase from the serous cells of the salivary gland. This enzyme breaks starch and glycogen into disaccharides. The mucous cells of the salivary gland secrete a mucus‚ which causes the food to stick together‚ and acts as a lubricant to aid in swallowing. The salivary glands are grouped into three categories: the parotid gland‚ submandibular glands‚ and sublingual‚ all located
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"Burp!" You cover your mouth with your hand‚ but it’s too late. The people at the next table in the lunchroom already heard. As you turn back to your soda‚ you think: Where did that burp come from? A burp — sometimes called a belch — is nothing but gas. When you eat or drink‚ you don’t just swallow food or liquid. You also swallow air at the same time. The air we breathe contains gases‚ like nitrogen (say: ny-truh-jen) and oxygen (say: ahk-sih-jen). Sometimes when you swallow these gases‚ they
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Nutrition is a process; it is how the body puts all the processes together in order to provide what our bodies need to be healthy‚ to grow and to maintain good health while supplying all our nutritive needs. There are different stages to nutrition‚ it starts with the food we ingest‚ then it is digested‚ it can then be used and absorbed by the body and is then assimilated and finally any waste is eliminated. At the first stage of the process is ingestion and it could be argued that good nutrition
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Frog Dissection Manual 1. 2. Place the frog on the dissecting pan. Do not pin it down. Use these descriptions and the picture to identify each of the following external structures. A. Head – the anterior end of the frog extending to and including the eardrums mouth – the large opening at the anterior end of the head made up of a maxilla and mandible maxilla – the upper jaw bone mandible – the lower jaw bone external nares (i.e. nostrils) – two small openings on the dorsal surface of the
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mixer and grinder of food. The stomach secrets Hydrochloric acid and enzymes that are used in the breaking down of the food. The food then leaves the stomach in form of a liquid or fluid into the small intestines where it is now absorbed into the system. The absorption
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Physiology & Anatomy Lab SC 145L Anatomy & Physiology I Lab Chemical and Physical Processes of Digestion Introduction: In this lab‚ we will see how different chemical processes occur as we observe how different enzymes digest different substrates and produce subunits. Key Terms: (found in bold in Lab Manual) Please define all bold terms in your own words: Enzymes- Large protein molecules made by your body cells. Catalyst- Without becoming part of the substance it will change the rate
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