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What type of system is this?

Created by: Arlene Barrett, Dennis Bratton, Mariah Gumphry, Haley Vrazel 2

ObjectivesEvaluate animals that are monogastric.

Analyze the components of a monogastric stomach.

Interpret the parts and functions of monogastric digestive system

Analyze the enzymes in a monogastic.

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Digestion is 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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Humans, swine, rabbits, chickens and horses all have a simple stomach, which is also

known as a monogastric digestive system.

MonogastricCarnivores and omnivores

have monogastric digestive systems.

Monogastric systems have a simple stomach structure and only one compartment.

Some animals with

monogastric digestive systems are pigs and rabbits. Humans also have monogastric digestive systems.

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Monogastric StomachSplit into 4 parts:Esophageal

Non-glandularConnects the stomach to the esophagus

CardiacMucus secretion starts here

FundicBody of the stomachDigestion and churning takes place hereMucus secretion

PyloricConnects to small intestinesMucus secretion

Monogastric Stomach The monogastric stomach is very

acidicpH drops to 2.0-3.5Amylase quits working due to low pHHas a mucus lining to protect the

stomach from digesting itselfMade of smooth muscle to aid in

constant churning/mixing

Monogastric stomach cont.HCl is produced, denatures proteins and

prepares them to be broken down

Pepsinogen is the inactive form of Pepsin

Pepsin, activated form of Pepsinogen, activated by HCl

Pepsin breaks down and digests the denatured protein

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Parts and functions of the monogastric mammal digestive

system continued…•Small Intestine

-enzymatic digestion and absorption -Functions of the small intestine: digestion of proteins, carbohydrates, and fats; absorption

of the end products of digestion 1. duodenum - most digestion occurs

here 2. jejunum - some digestion and some

absorption occur 3. ileum - mostly absorption

-Bile - made in liver, stored in gall bladder, active in the small intestine, emulsifies fat to aid in digestion

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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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Parts and functions of the monogastric mammal digestive

system continued…•Enzymes in the small intestine

VideoHorse’s Digestive System

http://www.youtube.com/watch?v=8lqk7igz9L4&feature=related

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ReviewEvaluate animals that are monogastric.

Analyze the components of a monogastric stomach.

Interpret the parts and functions of monogastric digestive system

Analyze the enzymes in a monogastic.

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Resources Horse’s Digestive System

http://www.youtube.com/watch?v=8lqk7igz9L4&feature=related

Resources: Rakowitz-McMillian Sam Houston State University Animal Science Note Packet

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