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Essential Question
What are the structures of the digestive system?
2.07 Remember the structures of the digestive system 2
Structures of the digestive system
Digestive system
Also known as: Alimentary Canal Digestive Tract Gastrointestinal Tract
Upper GI Lower GI
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Primary structures Mouth (oral cavity) Esophagus (gullet) Stomach Small intestine Large intestine (colon)
Accessory structures Tongue Teeth Salivary glands Pancreas Liver Gall bladder
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Structures of the digestive system
Structures of the digestive system
Mouth (buccal /oral cavity)
Tongue Teeth Salivary Glands Palate Uvula
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Structures of the digestive system
Tongue
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Structures of the digestive system
TeethPrimary (deciduous)
Secondary (permanent)
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Structures of the digestive system
Salivary glands Parotid gland Submandibular gland Sublingual gland
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Structures of the digestive system
Palate Hard Soft
Uvula Flap of skin
hanging in the
back of the throat
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Structures of the digestive system
Pharynx (throat) Nasopharynx Oropharynx Hypopharynx
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Structures of the digestive system
EsophagusFour wall layers
– Mucosa– Submucosa– Muscular– External serous
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Structures of the digestive system
Stomach3 Portions Fundus, Body, Pylorus
2 sphinctersCardiac and Pyloric
4 wall layersMucosa, submucosa, muscular and serous
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Structures of the digestive system
Small intestinesDuodenum
First segment
Jejunum Second segment
Ileum Third segment
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Structures of the digestive system
Accessory OrgansPancreasLiverGall Bladder
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Structures of the digestive system
Large intestine(colon)
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Structures of the digestive system
Check your knowledge…
2.07 Remember the structures of the digestive system 16
Essential Question
What are the structures of the digestive system?
2.07 Remember the structures of the digestive system 17