The Human Body Inside and Out: THE DIGESTIVE SYSTEM Ridgeview Elementary S. Slater
Roughly How It Looks Liver Esophagus Stomach Large Intestine Small Intestine
Structure of the Digestive System Includes the teeth, tongue, salivary glands, esophagus, stomach, small intestine, and large intestine. Muscles are used to open valve-like openings from organ to organ (like stomach to small intestine).
Gray’s Anatomy Gray994
Mouth STRUCTURE Mouth contains teeth, salivary gland, and tongue. FUNCTION The  teeth chew food ,  saliva  (from salivary gland)  softens it  up, and then, when sufficiently broken down, the  tongue moves food  to the back of the mouth to be swallowed.
Esophagus Structure Long tube lined with muscles connecting mouth with stomach. Function Pushes food from throat to stomach.  Acts only as a passageway; it does NOT break down food.
 
 
Stomach From Wikipedia Can hold 1 Litre of Food after eating, but can expand to over 4 Litres if necessary!
Stomach Cont. Structure Soft organ that fills with gastric juice to break down food to prepare for the absorption of nutrients at a later stage.  The stomach does NOT absorb nutrients. Function The stomach is intended to break down food and allow fat to be digested more easily.  It kills bacteria entering the system.  It does not absorb nutrients.
Small Intestine Structure: Connect from stomach to large intestine.  Muscles move food along the tract. Yours might be 4-5 metres, or 12-15 feet!  Four times your height! Function: Absorbs nutrients from food.
Large Intestine Structure Shorter than small intestine—1.5-2.5 metres. Also muscle lined to allow food to move along the tract. Function To absorb water and eliminate waste that was not absorbed by the small intestine.
Liver Produces Bile to help break down fats. Breaks down good and bad substances in the body to be eliminated or used.  (Good:  insulin.  Bad:  Toxins) Gray’s Anatomy
Interrelated With the Muscular System: The muscular system pushes food through the digestive tract. It also opens and closes the valves to each organ. The digestive system absorbs nutrients from food that can be converted to energy to power the muscles.
Interrelated The Circulatory System: The digestive system removes nutrients from food which can then be put in the blood stream and delivered to the body for energy.
Interrelated Skeletal System: Removes, among other things, calcium from food, which is essential for the strength of bones.
Interrelated Respiratory: Provides the diaphragm muscle with energy so that it can operate to inflate and deflate the lungs. The respiratory system provides oxygen which is needed to be combined with nutrients for muscles to use as energy.
Assignment Imagine you have been eaten alive by a giant!  As a paragraph or story, describe the steps of the digestion process as thoroughly and graphically as possible.  What fate awaits you?

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Digestive Slide Show Science Five

  • 1. The Human Body Inside and Out: THE DIGESTIVE SYSTEM Ridgeview Elementary S. Slater
  • 2. Roughly How It Looks Liver Esophagus Stomach Large Intestine Small Intestine
  • 3. Structure of the Digestive System Includes the teeth, tongue, salivary glands, esophagus, stomach, small intestine, and large intestine. Muscles are used to open valve-like openings from organ to organ (like stomach to small intestine).
  • 5. Mouth STRUCTURE Mouth contains teeth, salivary gland, and tongue. FUNCTION The teeth chew food , saliva (from salivary gland) softens it up, and then, when sufficiently broken down, the tongue moves food to the back of the mouth to be swallowed.
  • 6. Esophagus Structure Long tube lined with muscles connecting mouth with stomach. Function Pushes food from throat to stomach. Acts only as a passageway; it does NOT break down food.
  • 7.  
  • 8.  
  • 9. Stomach From Wikipedia Can hold 1 Litre of Food after eating, but can expand to over 4 Litres if necessary!
  • 10. Stomach Cont. Structure Soft organ that fills with gastric juice to break down food to prepare for the absorption of nutrients at a later stage. The stomach does NOT absorb nutrients. Function The stomach is intended to break down food and allow fat to be digested more easily. It kills bacteria entering the system. It does not absorb nutrients.
  • 11. Small Intestine Structure: Connect from stomach to large intestine. Muscles move food along the tract. Yours might be 4-5 metres, or 12-15 feet! Four times your height! Function: Absorbs nutrients from food.
  • 12. Large Intestine Structure Shorter than small intestine—1.5-2.5 metres. Also muscle lined to allow food to move along the tract. Function To absorb water and eliminate waste that was not absorbed by the small intestine.
  • 13. Liver Produces Bile to help break down fats. Breaks down good and bad substances in the body to be eliminated or used. (Good: insulin. Bad: Toxins) Gray’s Anatomy
  • 14. Interrelated With the Muscular System: The muscular system pushes food through the digestive tract. It also opens and closes the valves to each organ. The digestive system absorbs nutrients from food that can be converted to energy to power the muscles.
  • 15. Interrelated The Circulatory System: The digestive system removes nutrients from food which can then be put in the blood stream and delivered to the body for energy.
  • 16. Interrelated Skeletal System: Removes, among other things, calcium from food, which is essential for the strength of bones.
  • 17. Interrelated Respiratory: Provides the diaphragm muscle with energy so that it can operate to inflate and deflate the lungs. The respiratory system provides oxygen which is needed to be combined with nutrients for muscles to use as energy.
  • 18. Assignment Imagine you have been eaten alive by a giant! As a paragraph or story, describe the steps of the digestion process as thoroughly and graphically as possible. What fate awaits you?