Purpose The digestive system prepares food for use by hundreds of millions of body cells. Food when eaten cannot reach cells (because it cannot pass through the intestinal walls to the bloodstream and‚ if it could would not be in a useful chemical state. The gut modifies food physically and chemically and disposes of unusable waste. Physical and chemical modification (digestion) depends on exocrine and endocrine secretions and controlled movement of food through the digestive tract. Mouth Mouth
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Digestive System * uniquely constructed to perform its specialized function of turning food into the energy you need to survive and packaging the residue for waste disposal. Parts of the digestive system: 1) MOUTH * is the beginning of the digestive tract; * digestion starts here when taking the first bite of food. * Chewing breaks the food into pieces that are more easily digested‚ while saliva mixes with food to begin the process of breaking it down 2) ESOPHAGUS
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Structures and functions of the Digestion System This essay aims to explain the structure and functions of the digestion system‚ starting from consuming a cooked dinner to chemical and physical changes within the body‚ to prepare or help absorption of vital nutrients and help disposal of waste. The structure of the digestive system starts with the gastrointestinal tract‚ it is a tube that runs from the mouth to the anus and because of this some scientist says it is an external organ; there
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Digestive system: Or/ or stomat/o- oral cavity (Mouth) Digestion Begins Digestion-breaking down into small parts Oral- pertaining to the oral cavity(Mouth) Herpetic Stomatitis- inflammation of the oral cavity (mouth) caused by the herpes simply 1 virus (HSV1) aka “cold Sores” “fever blister” Mechanical digestion involves- mastication (Chewing) Bucc/o-Cheek Buccal- pertaining to a cheek Gloss/o or lingu/o- tongue Glossectomy-Surgical removal of the tongue sublingual Pertaining to
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The purpose of this essay is to research and evaluate the digestive system effectively and extensively. Then describe the differences and indifferences of three different organisms in relation to their digestive system. The three organisms that have been chosen are the human‚ for comparative purposes‚ the Goliath Bird Eating Spider and the Cobra Lily carnivorous plant. The Human Digestive System Digestion is the breaking down of substance in the body‚ into an easier form of which it can be absorbed
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Digestive System: Shade the of the correct answer. 1. What is the digestive system? The body’s breathing system The body’s system of nerves The body’s food-processing system The body’s blood-transporting system 2. Digestion begins in the mouth. Which of the following statement is INCORRECT? The tongue aids in the digestion of the food. The saliva changes some of the starches in the food to sugar. The tongue keeps the food in place in the mouth while the food is being chewed
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source/chemical composition Grass (fibre/starch) / sugars‚ proteins‚ oils‚ other nutrients Meat‚ bones / proteins‚ fats Nectar & pollen / High sugar content (sucrose‚ glucose‚ fructose)‚ carbohydrates Function of various structures within their digestive systems Four stomach chambers: Rumen – bacteria and protozoa break down cellulose. Reticulum - Once rumen is full goat regurgitates‚ the reticulum allows for this to happen. Omasum – bacteria and micro-organisms breakdown food. Obomasum – secretes
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Teeth * Tears and grind the food‚ breaking it down into smaller fragments. * By the age of 21‚ two sets of teeth have been formed. Deciduous teeth (baby teeth or milk teeth) * Begins to erupt around 6 months ‚ and a baby has a full set of (20 teeth) by the age of 2 years. Permanent Teeth * Enlarge and develop‚ the roots of the milk are reabsorbed‚ and between the ages of 6 and 12 they loosen and fall out. * The teeth are classified according to shape and function as incisors
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Digestive Systems in Different Animals Different species of animals have different digestive systems which are adapted to their unique requirements. The type of food‚ method of food gathering and energy needs are some factors that influence the type of digestive system an animal needs in order to survive. Herbivores have a more specialised digestive system than that of a carnivore because it is more difficult to digest vegetation than meat. The teeth are flat so that grass and plant material can
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BIOLOGY ‘S ASSIGNMENT 1/What is the purpose of digestion? * Break down food‚ absorb nutrient from food into body tissues and systems in body 2What is the name given to mammal only eat meat ? * Carnivores 3/What is the name of mammal only eat plant? * Herbivores 4/What is the difference between a fore-gut fermenter and hind-gut fermenter? Example? Because plant cells have tough cellulose cell walls and herbivore are not able to digest‚ they use micro- organisms that live symbiotically
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