means to transfer nutrition from the external environment into the cellular level in order to sustain life. Salivary glands‚ controlled by the autonomic nervous system‚ are located in the oral cavity. Its main role is to secrete saliva in the oral cavity. There are three pairs of salivary glands. Parotoid savary gland lies under the skin on each side of the mandible. These glands secrete amylase‚ an enzyme that breaks down starches. The parotoid duct implies empties into the vestibule at the level of
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Unit 5 Outcome 2 – Energy Metabolism Booklet The Respiratory System The respiratory system consists of the nose‚ mouth‚ pharynx‚ larynx‚ trachea‚ bronchi and lungs. These provide a passageway to allow air in and out of the body. Every cell in the body requires oxygen to survive. The primary function of the respiratory system is the exchange of gases. The respiratory system allows oxygen and carbon dioxide exchange‚ this is necessary to sustain life. During the process of breathing air is inhaled
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Indicate whether each of the following statements about triglycerides is true or false. Indicate whether each of the following statements about triglycerides is true or false. 1. A triacylglycerol is composed of 3 glycerol molecules joined to a fatty acid. 2. The hydrocarbon chains of fatty acids vary in length as well as in the number and location of double bonds between the carbon atoms. 3. Fatty acids with one double bond in their hydrocarbon chain are called monounsaturated‚ while those with
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most anterior and shortest portion Jejunum Hallow muscular tube‚ support the absorption of carbohydrates and proteins; middle and longest portion. Ileum Hallow muscular tube‚ mainly to absorb vitamin B12 and bile salts and whatever products of digestion that were not absorbed; terminal portion joining large intestine at the ileocecal valve. Colon One of the final portions of the digestive system. Includes the anal canal‚ rectum‚ colon‚ and cecum. Takes care of absorbing any water left in the food
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American cheese‚ and the fat comes from the meatballs. The whole digestion process starts even before the food reaches our mouth as hunger and appetite are two major components of the cephalic phase of digestion‚ which is the stimulation and release of digestive juices in preparation of the food. Once inside the mouth‚ my teeth and salivary enzymes help to break down the food components into smaller molecules. This chemical amylase in our mouth helps to start breaking down the food chemically in
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b 0 How does the body obtain and utilise energy? Fueled fitness centre 0151 898 1643 The cardiovascular system The myocardium‚ commonly referred to as the heart‚ acts as a pump for transporting blood around the body via a collective system‚ known as the cardiovascular system. This system has various components; blood vessels; mainly arteries‚ veins and capillaries. The cardiovascular system has four main functions within the body. Firstly to transport
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and absorb these three macronutrients. The body is like a work line‚ working in an orderly way to make sure digestion and absorption is done properly. Carbohydrates are a primary energy source for our entire body especially the nerve system which means it needs to be digested and absorbed efficiently. Digestion of carbohydrates starts in the mouth where the process of breaking down starch happens and is broken down to maltose. Once it gets to the stomach the acid inactivates the enzyme and then
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Concentarion ENZYME LAB Introduction- Enzymes are proteins that speed up the rate of reactions in living things. In this lab‚ we will perform four experiments exploring the way enzymes work. PART A: pH SPECIFICITY Every enzyme has a specific pH at which it works best. In this section‚ you will determine which pH is best for the enzyme‚ catalase. Living tissues produce the enzyme catalase‚ which is able to break down hydrogen peroxide into oxygen gas and water. The reaction is
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1/2013-5/2013 Budget estimation: II/- RESEARCH PROPOSAL 1.AIM: * Prepareration of heat-moisture treated in presentation of diferent organic acid * Deternimination of physicochemical properties of treated starch * Invesstigation of resistant starch contents of treadted starch 2. Background 2.1 Literature review 2.1.1Overview of Sweet and yam potato Sweet Potato - common name applied to a perennial‚ trailing herb of the bindweed family. The plant‚ which is native to tropical America
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beginning to end. Where does the food go? As food enters the mouth‚ both mechanical and chemical digestion begins. First the food is physically broken down by the mechanical process of mastication (chewing)‚ into smaller particles‚ creating a bolus with the tongue against the soft plate. During this phase‚ the salivary glands mix the food with salivary amylase beginning the chemical digestion of starches. The bolus then enters the pharynx (throat) first then is routed to the esophagus. These
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