how to convince to people that your a scientist

This is a new segment that I'll write in for convincing people you know science. This week is the digestive system.  
 You might be failing science, but you can still convince people you're scientifically educated with knowing how the digestive system works.
  The Digestive system is made up of a series of hollow organs used to transport food from the mouth to the anus.
The digestive system starts at the mouth. Teeth grinds the food and the Saliva break down foods chemically and the is forced down the throat by the tongue.
The food then travels through a long tube called the esophagus where it is moved down to the stomach using muscles along the inner wall.
The stomach is a large sack-like organ that churns the food bathes it acid.
After the stomach, food enters the small intestine where nutrients are absorbed and chyme-partly digested foods mixed with acid- are broken down even more
Food then passes through to the large intestine where water and electrolytes are removed from the food
And lastly the food is stored as waste and extracted via the anus.