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Overview of Digest
24.1--Overview of Digestion
Term | Definition |
---|---|
Primary GI Tract Organs | Mouth (Oral Cavity), Pharynx, Esophagus, Stomach, Small Intestine, and Large Intestine; in Tonus (contraction) |
Accessory Organs | Teeth, Tongue, Salivary Glands, Liver, Gallbladder, and Pancreas; Mostly produce and store secretions in ducts |
Six Functions of Digestive System | Ingestion, Secretion, Mixing and Propulsion, Digestion, Absorption, Defecation |
Ingestion | Taking in food into the mouth |
Secretion | Release of Water, Acid, Buffers, and Enzymes into lumen of GI tract |
Mixing and Propulsion | Churning and Propulsion |
Digestion | Mechanical and Chemical Breakdown |
Absorption | Passage of digested products from GI tract into blood and lymph |
Defecation | Elimination of feces from GI tract |