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Cards In This Set
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What are the main groups of the digestive system.
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Two main groups
* Alimentary canal (also called the GI (gastro intestinal) tract) - continuous coiled hollow musclar tube (smooth muscle so not voluntary) * Accesorry digestive organs |
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Organs of the Alimentary Canal
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Mouth
Pharynx (throat) - respiratory and digestive unite Esophagus Stomach Small intestine Large intestin Rectum Anus |
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Draw the organs of the digestive system
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What are the accessory digestive organs
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Salivary gland
Tounge Teeth Pancreas Liver Gall bladder |
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Draw the alimentary canal wall
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What are the structures of alimentary canal
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* Mucosa - in contact with food substances
- inner most layer - moist membrane - mucus * Submucosa - blood supply and nerves * Muscularis externa - smooth muscle - circular and longitudinal * Serosa - anchors organs |
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What is the mucosa?
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Structure of the alimentary canal the inner most layer that is in contact with the food and has a lot of mucus
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What is the submucosa?
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Structure of the alimentary canal has the blood supply and nerves
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What is the muscularis externa?
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Smooth muscle
Circular make the canal constrict (smaller hole) runs around the canal (circle) Longitudinal make the canal stretch and shorten (worm) runs the length of the canal |
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What is the serosa?
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Structure of the alimentary canal that attaches to the abdomen
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What are the major processes occurring digestive system activity.
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Ingestion
Mechanical digestion Propulsion Chemical digestion Absorbtion Defecation |
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Draw the MUST KNOW DIAGRAM
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 Add segmentation |
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What is ingestion?
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Getting food into the mouth
This is an active, voluntary process |
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What is propulsion?
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Moving foods from one region of the digestive system to another
Including: Swallowing Peristalsis Segmentation |
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Draw a diagram of swallowing
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