BIO 115 Digestive system anatomy f09

BIO 115 Digestive system anatomy f09 - Digestive system...

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Unformatted text preview: Digestive system Digestive system A. General characteristics Function: 1.Ingestion 2.Secretion 3.Mechanical manipulation 4.Digestion- mechanical & chemical 5.Absorption 6.Defecation Digestive system A. General characteristics Components (2): 1. Gastrointestinal tract/ Alimentary Canal Digestive system A. General characteristics Components (2): 1. Gastrointestinal tract/ Alimentary Canal 2. Accessory Organs Digestive system B. Microscopic organization Organized into 4 specific layers Digestive system B. Microscopic organization Organized into 4 specific layers 1. Mucosa Digestive system B. Microscopic organization Organized into 4 specific layers 1. Mucosa- Epithelium (5-7 days) Different cell with different functions GALT 1. Mucosa 2. Submucosa 1. Mucosa 2. Submucosa 3. Muscularis externa 1. Mucosa 2. Submucosa 3. Muscularis externa 4. Serosa Digestive system C. Oral/Buccal cavity 1. Lips/labia: 2. Palate 2: Soft & hard palate Torus/Tori: non-pathological exostoses 2. Palate 2: Soft & hard palate 3. Salivary glands (3) Parotid, Submandibular, Sublingual 3. Salivary glands (3)-Parotid, Submandibular, Sublingual-Secrete saliva-1-1.5 L/day 4. Tongue- Move, manipulate, & sense 3. Salivary glands (3)-Parotid, Submandibular, Sublingual-Secrete saliva-1-1.5 L/day 4. Tongue- Move, manipulate, & sense 5. Teeth/dentes 5. Teeth/dentes- Surrounded by gingivae/gums- Attached by periodontal ligaments Exostosi s Root Canal Digestive system D. Pharynx- Oropharynx & laryngopharynx both contain both air, food & liquids Digestive system E. Esophagus- Continuous w/ pharynx Digestive system E. Esophagus- Continuous w/ pharynx- Ends @ Cardial orfice of stomach Digestive system E. Esophagus- Continuous w/ pharynx- Ends @ Cardial orfice of stomach- Passes through esophageal hiatus of diaphragm Digestive system E. Esophagus- Continuous w/ pharynx- Ends @ Cardial orfice of stomach- Passes through esophageal hiatus of diaphragm- Transport food through peristalsis Digestive system E. Esophagus- Continuous w/ pharynx- Ends @ Cardial orfice of stomach- Passes through esophageal hiatus of diaphragm- Transport food through peristalsis- Contains 2 sphincters (upper/lower) Digestive system...
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This note was uploaded on 06/06/2011 for the course BIO 115 taught by Professor Chen during the Fall '09 term at Moraine Valley Community College.

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BIO 115 Digestive system anatomy f09 - Digestive system...

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