The Digestive System Chapter 23 Anatomy of the Digestive System – Part 4.
The Digestive System. Learning Objectives List the three types of digestive systems for animals....
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Transcript of The Digestive System. Learning Objectives List the three types of digestive systems for animals....
![Page 1: The Digestive System. Learning Objectives List the three types of digestive systems for animals. Describe the function of the digestive system. Name the.](https://reader036.fdocuments.in/reader036/viewer/2022082321/56649da25503460f94a8f654/html5/thumbnails/1.jpg)
The Digestive System
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Learning Objectives
• List the three types of digestive systems for animals.
• Describe the function of the digestive system.
• Name the parts of the digestive system in poultry and explain their function.
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Types of Digestive Tracts
• Monogastric: one stomach
• Ruminant: multiple chambers
• Modified Monogastric: poultry/birds
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Function of Digestive Tract
• Provide nutrients to the body
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Modified Monogastric Poultry/Birds
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Mouth (beak)
• No teeth – replaced by beak
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Esophagus
• The tube that connects the mouth with the rest of the body
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Crop
• Located in the neck region of the bird
• Part of the esophagus
• Used to store food until the bird is ready to digest more food
• Food is softened by saliva and secretions from the crop wall
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Proventriculus
• True Stomach
• Secretes enzymes
• Passageway between crop and gizzard
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Gizzard
• Unique to birds
• End of stomach before duodenum
• Made up of two smooth muscles
• Contains grit which acts as the birds teeth
• Feed is crushed and mixed with digestive juices
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Small Intestine
• Made up of two parts
– duodenum
– lower small intestine
• Important to absorb nutrients
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Ceca
• Have no real function
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Large Intestine
• Additional absorption of water
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Pancreas
• Located in the center of the duodenal loop
• Secretes pancreatic juice which neutralizes the enzymes secreted by the Proventriculus
• Helps break down fat
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Liver
• Produces a dark green substance called bile
• Bile is necessary for the absorption of fat
• Bile is stored in the Gall Bladder
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Cloaca
• The end of three different tracts– digestive
– reproductive– excretory
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