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Questions and Answers
What is the function of the small intestine?
What is the function of the small intestine?
- Compacts waste into feces and eliminates it through the rectum and anus.
- Absorbs water and electrolytes from indigestible food matter.
- Stores feces until elimination.
- Digests and absorbs nutrients from food (correct)
What are the three sections of the small intestine?
What are the three sections of the small intestine?
- Liver, gallbladder, and pancreas.
- Duodenum, jejunum, and ileum. (correct)
- Cecum, colon, and rectum.
- Esophagus, stomach, and duodenum.
What is the function of villi and microvilli in the small intestine?
What is the function of villi and microvilli in the small intestine?
- Store feces until elimination.
- Increase surface area for efficient absorption. (correct)
- Absorb water and electrolytes from indigestible food matter.
- Ferment remaining carbohydrates and fiber.
What is the role of the large intestine in the digestive system?
What is the role of the large intestine in the digestive system?
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What is the longest segment of the large intestine?
What is the longest segment of the large intestine?
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What is the function of the gut microbiota in the large intestine?
What is the function of the gut microbiota in the large intestine?
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What is the role of the small intestine in the immune system?
What is the role of the small intestine in the immune system?
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Study Notes
Small Intestine:
- Part of the digestive system, approximately 6 meters long.
- Consists of three sections: duodenum, jejunum, and ileum.
- Digests and absorbs nutrients from food.
- Uses digestive enzymes and bile to break down carbohydrates, proteins, and fats.
- Villi and microvilli increase surface area for efficient absorption.
- Nutrients are absorbed into the bloodstream and used for energy, growth, and repair.
- Contains specialized cells that defend against harmful bacteria and viruses.
- Plays a vital role in the immune system.
Large Intestine:
- Final segment of the digestive system.
- Absorbs water and electrolytes from indigestible food matter.
- Compacts waste into feces and eliminates it through the rectum and anus.
- Divided into four parts: cecum, colon, rectum, and anus.
- Colon is the longest segment and absorbs water, electrolytes, and vitamins.
- Gut microbiota ferments remaining carbohydrates and fiber.
- Rectum stores feces until elimination.
- Anus is the opening through which feces are eliminated.
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