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Efficient Digestion System: Components, Structure & Function

Explore how the various components of the digestive system interconnect, from ingestion to absorption and waste elimination, breaking down food into molecular components for optimal bodily function. Learn about the mechanical and chemical processes involved, including the role of enzymes and digestive juices, and the structural design of organs like the stomach, small intestine, and large intestine. Gain insights into the importance of a larger surface area for speeding up digestion and the absorption of essential nutrients. Discover how gastric juice and bile play key roles in digestion, and how their pH levels are crucial for enzymatic activities. Witness the external and internal structures of digestive organs through detailed observations, enhancing your understanding of how the digestive system functions seamlessly to maintain overall health.

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Efficient Digestion System: Components, Structure & Function

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  1. How do the COMPONENTS of a SystemINTERCONNECT?

  2. http://www.whfoods.com/genpage.php?tname=faq&dbid=16#digestionhttp://www.whfoods.com/genpage.php?tname=faq&dbid=16#digestion Animation of Digestion

  3. System Digestive

  4. INGESTION

  5. FUNCTION/ PURPOSE OF SYSTEM

  6. Digestion • breakdown of food  into molecular components small enough to cross the plasma membrane

  7. saliva saliva saliva Mechanical Digestion Same volume of food Small total surface area Larger total surface area A larger surface area speeds up digestion

  8. Smaller pieces allow for more areas of contact for enzymes and digestive juices to act on speeding up digestion

  9. Digestion Definition • Digestion is the breaking down of food into smaller and simpler substances • Mechanical digestion and Chemicaldigestion do this in different ways ABSORBED ELIMINATED

  10. Absorption passage of molecules into body's interior &passage throughout the body

  11. ELIMINATION OF WASTE LARGE INTESTINES REABSORBS WATER & SALTS

  12. STRUCTURE OF SYSTEM

  13. TheDigestiveSystem Mouth / Teeth Esophagus Liver Stomach Small intestine Large intestine Rectum Anus Appendix

  14. OBSERVING DIGESTIVE ORGANS • External and internal structure of the stomach. • a. How would you describe the external appearance of the stomach? • b. What is the action (behavior)of the stomach? • c. How is the stomach designed to perform its function? • External and internal structure of the small and large intestines • a. Describe the appearance of the small and large intestines. • b. What are the main actions (behavior) of the small and large intestines? • c. How is the small intestine designed to perform its function? • 3. Determining the pH of gastric juice and bile • a. Describe the role of gastric juice and bile in digestion. • b. How is the pH of gastric juice and bile related to its role in digestion?

  15. BEHAVIOR

  16. Image source: http://www.flickr.com/photos/liujoanne/2172007698/

  17. INTERCONNECTION Digestion Absorption Elimination of Waste

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