Questions and Answers
Where does most nutrient absorption occur?
Small Intestine
What are the names of the three sections of the small intestine?
Duodenum, Jejunum, Ileum
What is the order through which food travels through the digestive tract?
Mouth, Esophagus, Stomach, Small Intestine, Large Intestine, Liver, Pancreas, Gall Bladder
What does amylase do?
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What do lipases break down?
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What do proteases break down?
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What are the primary organs of the digestive system?
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What are the accessory organs of digestion?
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What is peristalsis?
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Where does peristalsis begin?
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Where is hydrochloric acid secreted?
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What is the function of bile?
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What is the function of the gall bladder?
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Why is the small intestine lined with villi and microvilli?
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Where is most water absorbed in the GI tract?
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Where are over 400 species of bacteria located in the GI tract?
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Study Notes
Nutrient Absorption
- Most nutrient absorption occurs in the small intestine.
Small Intestine Structure
- The small intestine has three sections: Duodenum, Jejunum, Ileum.
Digestive Tract Pathway
- Food travels through the digestive tract in the following order: Mouth, Esophagus, Stomach, Small Intestine, Large Intestine, Liver, Pancreas, Gall Bladder.
Enzymes and Their Functions
- Amylase: Breaks down starch.
- Lipases: Breaks down fat.
- Proteases: Breaks down protein.
Organs of the Digestive System
- Primary Organs: Mouth, Stomach, Liver, Pancreas, Small Intestine, Large Intestine.
- Accessory Organs: Esophagus, Gall Bladder.
Peristalsis
- Peristalsis: Coordinated muscular contractions that propel food through the gastrointestinal (GI) tract.
- Begins in the esophagus; most prominent in the small intestine.
Hydrochloric Acid
- Hydrochloric acid is secreted in the stomach by parietal cells.
Bile and Its Function
- Bile aids in the digestion of fats.
Gall Bladder Function
- The gall bladder stores bile.
Villi and Microvilli
- The small intestine is lined with villi and microvilli to maximize nutrient absorption through absorptive cells.
Water Absorption
- Most water is absorbed in the large intestine.
Intestinal Microflora
- Over 400 species of bacteria are located in the GI tract, termed intestinal microflora.
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Description
Test your knowledge on the digestive system with these flashcards! Learn about nutrient absorption, the sections of the small intestine, and the pathway of food through the digestive tract. Perfect for students studying biology or health sciences.
