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The Digestive System (DIGESTIVE TRACT (Large intestine (Cecum, Appendix,…
The Digestive System
DIGESTIVE TRACT
Large intestine
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Colon (ascending, transverse, descending, sigmoid)
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LARGE INTESTINE
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PERISTALSIS
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Feces include water, fat, proteins, mucus and non digested fibers
INTESTINAL FLORA
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Leave out of feces and help the body to synthetize vitamin B12, Thiamin, Riboflavin and Vitamin K
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STEPS
- INGESTION: bring food to mouth
- SWALLOWING: send the food to the esophagus by a reflex
- DIGESTION (CHEMICAL): break down food by mechanical and chemical (enzymatic) digestion into substances that can be used by the body
- ABSORPTION / ASIMILATION: passage of nutrients from the small intestine to the blood capillaries
- EXCRETION: waste disposal
STOMACH
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COMPOSITION
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As muscles contract, they further break the food and mix it with secretions (from glands) that line the inner wall of the stomach
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ESOPHAGUS
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EPIGLOTTIS must be closed, or the flod will enter the trachea
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SMALL INTESTINE
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Sections
DUODENUM
Colects the chyme from the stomach. Then the chyme, the bile, pancreatic juice and intestinal juice make the CHYLE
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DIGESTION
Process of breaking down food by mechanical and enzymatic action into subtances that can be used in the body
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