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The Digestive/Urinary System, Kennedy Abraham, Per.5 (Digestive enzymes…
The Digestive/Urinary System, Kennedy Abraham, Per.5
Major functions
Digestive System
Breaks down and absorbs food for metabolism for energy, growth, and repair of tissue.
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Mechanical digestion- The physical act of breaking down food starting at the mouth.(chewing movements and mixing movements)
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Digestive enzymes
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Intestinal enzymes produced by brush-boarder cells further breakdown proteins and carbs into their monomers
Major Organs
Digestive Organs
- Accessory Organs- Teeth, tongue, salivary glands, liver, gall bladder, pancreas
- Alimentary Canal (GI Tract)- long irregularly shaped tubes opens at both ends approximately 9m(30ft). Mouth, Pharynx, esophagus, stomach, small and large intestines
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Layers of GI tract
- Submucosa- Areolar connectie tissue, submucosal plexus
3 Muscularis layer- Inner circular layer, outer longitudinal layer
- Mucosa- mucosa membrane, epithelium, lamina propria, muscularis mucosae
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Nephron and physiology
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- Glomerular (bowmans) capsule
- Proximal convoluted tubule (PCT)
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- Distal convoluted tubule (DCT)
Disorders
Digestive System
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Gastroesophageal reflux disease- esophagus sphincter relaxes, allowing content of stomach to move back into the esophagus.
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