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Facts about Our Digestive system

 • We eat about 500kg of food per year.
1.7 liters of saliva is produced each day.
The esophagus is approximately 25cm long.
Muscles contract in waves to move the food down the esophagus. This means that food would get to a person's stomach, even if they were standing on their head.
An adult's stomach can hold approximately 1.5 liters of material.
Every day 11.5 liters of digested food, liquids and digestive juices flow through the digestive system, but only 100 mls is lost in feces.
In the mouth, food is either cooled or warmed to a more suitable temperature.
Our digestive system has its own little mini-brain.                       
     The functioning of the digestive system is regulated by the enteric nervous system (ENS), which is made up of a tremendous amount of nerve cells and is regulated by the same neurotransmitters, most notably serotonin, found in the brain. This similarity has earned the ENS the title of the "Second Brain".our brain and digestive system work in close partnership, a phenomenon that we have first-hand knowledge of any time our stomach flips when we think of something anxiety-provoking — or more dramatically if we experience diarrhea when we are stressed. This collaboration is thought to be essential to our survival as a species; although digestion is essential for life, dealing with threats is just as necessary. The body developed the "flight or fight" system to divert resources away from the digestive system to the systems of the body needed to fight off or run away from things that might do us harm. Dysfunction in the brain-gut connection has been theorized to play a role in the development of functional gastrointestinal disorders (FGDs).

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