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The Digestive System - A comparison of the different animal digestive systems PowerPoint Presentation

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Published on : Jul 10, 2021 | Views : 2544 | Downloads : 1

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Slide 1-

The Digestive System A comparison of the different animal digestive systems
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What is Digestion? The process by which large complex nutrient molecules are broken down into simpler molecules capable of being used by the organism for food.
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Simple Stomach Humans, swine, rabbits, chickens and horses all have a simple stomach, which is also known as a monogastric digestive system.
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http://www.gamequarium.org/cgi-bin/search/linfo.cgi?id=9673 http://kidshealth.org/kid/htbw/_bfs_DSmoviesource.html
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Parts and functions of the monogastric mammal digestive system •Mouth -gather and chew feed using tongue and teeth -salivary glands moisten feed to aid in swallowing -saliva begins the carbohydrate breakdown • Esophagus -tube from mouth to stomach that food travels down • Stomach -muscular gland lined sac that chemically and mechanically digests food. PH Stomach movement
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Parts and functions of the monogastric digestive system continued… •Small Intestine - -absorption of proteins, carbohydrates, and fats; -Enzymes in the small intestine -Bile - made in liver, stored in gall bladder, active in the small intestine, emulsifies (capture) fat to aid in digestion •Pancreas- -Enzymes Produced to further break down Carbohydrates, Proteins and Fat in small intestate.
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Parts and functions of the monogastric mammal digestive system continued… •Cecum - essentially non functioning in many monogastrics. Rabbits and horses have an enlarged cecum that acts like a rumen and is involved with microbial digestion (fermentation) • Large Intestine -bacterial activity -water absorption -waste storage
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Digestive Tract of the Monogastric Mammal
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•Mouth/Beak - gather and break down feed • Crop - feed storage and moistening • Gizzard - muscular stomach; mechanical breakdown Parts and functions of the monogastric avian digestive system
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Digestive Tract of the Monogastric Avian Known as a modified monogastric system
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Complex Stomach Deer Sheep, cows, and goats are examples of animals with complex stomachs, which are also known as ruminant digestive systems
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• Rumen - large fermentation vat; also called the "paunch" -anaerobic -Temperature = 39oC (103oF) -saturated with gasses -constant motion Parts and functions of the ruminant digestive system continued… Lining of the rumen
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Parts and functions of the ruminant digestive system continued… • Functions of Microorganisms -digest roughages to make Volatile Fatty Acids -make protein (Very similar to cecum of rabbit and horse) The function of the rumen is to house microorganisms.
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Parts and functions of the ruminant digestive system continued… • Reticulum - "honeycomb" -houses microorganisms -catches hardware (ingested by animal) -houses the opening to the omasum • Omasum - "manyplies“ or “book” -full of folded tissue -water absorption • Abomasum - true stomach -pepsin -HCl
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Review Pigs, Rabbits, Horses, Chickens, and Humans have a simple stomach or a monogastric digestive system Cows, Sheep and Goats have a complex stomach or a ruminant digestive system
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What type of digestive system is this? Ruminant
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What type of digestive system is this? Avian Monogastric System (modified monogastric)
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What type of system is this? Monogastric
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How does that compare to you?