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Questions and Answers
What is the primary function of the digestive system?
What is the primary function of the digestive system?
- To absorb nutrients into the bloodstream (correct)
- To store energy for the body
- To eliminate waste products from the body
- To break down large molecules into smaller molecules
What is the role of the mouth in the digestive system?
What is the role of the mouth in the digestive system?
- To eliminate waste products from the body
- To absorb nutrients into the bloodstream
- To store food before digestion
- To break down carbohydrates into simple sugars (correct)
What is the function of the small intestine in the digestive system?
What is the function of the small intestine in the digestive system?
- To mix food with digestive enzymes
- To store bile from the liver
- To absorb nutrients into the bloodstream (correct)
- To break down proteins into amino acids
What is the role of the liver in the digestive system?
What is the role of the liver in the digestive system?
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What is the function of the large intestine in the digestive system?
What is the function of the large intestine in the digestive system?
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Study Notes
Components of the Digestive System
- Mouth: consists of teeth, tongue, and salivary glands
- Esophagus: muscular tube that carries food to the stomach
- Stomach: muscular sac that secretes digestive enzymes and acids
- Small intestine: long, thin tube where most nutrient absorption occurs
- Liver: produces bile to break down fats
- Pancreas: produces digestive enzymes
- Gallbladder: stores bile from the liver
- Large intestine (colon): absorbs water and electrolytes
- Rectum: stores feces until eliminated through the anus
Processes of the Digestive System
- Ingestion: taking food into the mouth
- Mechanical digestion: breaking down food into smaller pieces (chewing, grinding)
- Chemical digestion: breaking down food into smaller molecules (enzymes, acids)
- Absorption: nutrients absorbed into bloodstream through intestinal walls
- Elimination: waste products eliminated from the body through the anus
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