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Digestive System
| Question | Answer |
|---|---|
| Function of digestive system | Breaks down food small enough to be absorbed into the blood stream |
| alimentary canal | organs that form a tube through the body in a continuous tract |
| accessory organs | help the digestive system but aren't part of the tube |
| parts of the alimentary canal | mouth, part of the pharynx, esophagus, stomach, intestines |
| peristalsis | the rhythmic muscle contractions that move food through the alimentary canal |
| the digestive system secretes | saliva and enzymes |
| digestion | to break down food into small molecules |
| absorption | movements of digestion from the alimentary canal into the bloodstream |
| mucosa | the innermost tissue layer; very thin secretes mucus |
| submucosa | mostly connective tissue: very thin |
| muscularis | mode of 2 layers of muscle: 1-circular layer where muscles wrap around the tube 2-longitudinal layer: muscle fibers run the length of the tube |
| serosa | thin, delicate, lubricated layer in every part of digestive system except for the esophagus |
| adventitin | outer layer of the esophagus. tough, not lubricated |
| stratified squamos epithelium | lines digestive tract from mouth to stomach (not including stomach) |
| simple columnar epithelium | lines digestive tract from stomach (including stomach) down |
| mouth | the opening |
| mastication | cutting up the food |
| kneeding | food is mashed between the tongue and hard palette. |
Created by:
gballi344348