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Excretory System

Explore the essential role of the large intestine in food breakdown, absorption of vital nutrients, and common issues like diarrhea and constipation. Learn how bacteria influence digestion and nutrient absorption processes.

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Excretory System

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  1. Excretory System

  2. Food Breakdown and Absorption • Large intestine does not produce any digestive enzymes • Bacteria feed on leftover nutrients • They produce methane and hydrogen sulfide • Bacteria produce vitamins • Large intestine absorbs these vitamins and water

  3. Feces • Contains • undigested food • Mucus • Millions of bacteria • water

  4. Diarrhea • Watery stools • Food rushed through large intestine before water can be absorbed • May be due to a variety of reasons like bacteria infection • Loss of fluids and electrolytes may cause dehydration

  5. Constipation • Food residue remains in the large intestine too long • Too much water is absorbed • Difficult stool • May result from lack of fiber or diet problems or failure to “heed the call”

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