Organ
Movement
Digestive Juices Used
Food Particles
Broken Down
Mouth
Chewing
Saliva
Starches
Esophagus
Swallowing
None
None
Stomach
Upper muscle in stomach relaxes to let food enter and lower muscle mixes food with digestive juice
Stomach acid
Protein
Small intestine
Peristalsis
Small intestine digestive juice
Starches, protein, and carbohydrates Pancreas
None
Pancreatic juice
Starches, fats, and protein Liver
None
Bile acids
Fats
In my opinion the most important system is the digestive system. Yes, I know that Circulatory System keeps you alive, and that without the Reproductive System we wouldn’t be here. But although the Circulatory System keeps you alive you will eventually starve to death without the digestive system so you won’t be able to reproduce because you won’t live long enough to mature and get the cells necessary in order to make a baby. Now, that being said let me tell you some facts about the digestive system. For one the digestive system breaks down the food so it can absorb it easily and eventually poop it out and the digestive system has to protect itself from… itself. Now this may sound weird but according to livescience.com “Cells along the inner wall of the stomach secrete roughly 2 liters (0.5 gallons) of hydrochloric acid each day, which helps kill bacteria and aids in digestion. If hydrochloric acid sounds familiar to you, it may be because the powerful chemical is commonly used to remove rust and scale from steel sheets and coils, and is also found in some cleaning supplies, including toilet-bowl cleaners. To protect itself from the corrosive acid, the stomach lining has a thick coating of mucus. But this mucus can't buffer the digestive juices indefinitely, so the stomach produces a new coat of mucus every two weeks.” Now I am going to show you the process of the digestive system which I have fond from niddk.nih.gov