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18 Cards in this Set
- Front
- Back
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Digestive tract starts where and ends where |
Starts at Mouth ends at anus |
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Ingestion |
Eating or chewing |
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Secretion |
Secretes fluids as food moves along |
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Mixing and propulsion |
Organ contraction to churn good as well as contract to move it down the system |
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Digestion |
Breaking the food into it's molecular components ( by cutting food with enzymes to break it down) |
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Absorption |
Absorbing into blood stream for nutrients |
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Defecation |
What we cannot digest or absorb |
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Layers of digestive tract wall |
Mucosa Serosa |
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Mucosa |
Right next to luman, contains epithelium, lamina propria, and musclularis mucosa |
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Epithelium |
Simple cells, direct lining next to food in the wall |
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How often is epithelium replaced |
Every 5-7 days |
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Lamina propria |
Binds epithelium to musclularis |
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In the lamina propria is where we |
Absorb nutrients into blood stream, has blood vessels and lymph vessels |
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Musclularis mucosa |
Forms folds to increase surface area |
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Submucosa |
Binds mucosa to musularis |
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Musclularis |
Skeletal muscle Mouth Pharynx Superiors esophagus |
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Smooth muscle |
Every thing down from pharynx |
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Serosa |
Visceral peritoneum |
