Science Lab: Digestive System
The first step of getting the food in your body is by chewing the food in your mouth. First your incisors, the four teeth in the front of your mouth, cuts the food. 
Then your molars grind your food into more petite pieces so your body can mechanically break the food down.
The amylase, the enzymes located in your mouth, chemically break the complex carbohydrates into simple sugars, after this the tongue shapes the food so it is able to swallow and it goes to the esophagus.The esophagus is a tunnel of muscle that connects the pharynx and is then fronted by the upper esophageal sphincter and ends at the lower esophageal sphincter.
After that the food goes to the stomach and temporarily stores the foods and liquids.Then the stomach produces digestive juices like hydrochloric acid and pepsin which break down proteins.
The food goes to the small intestine through the pyloric sphincter. The small intestine is where the absorption of minerals and nutrients occurs. The food first goes through the Duodenum where the food is mixed in with enzymes from the pancreas and and bile from the gallbladder. Then it goes to the Jejunum which absorbs all the nutrients. The last part of the intestine is the Ileum which soaks up the bile acids that return to the liver.
Next it goes through the large intestine which mainly absorbs the water from the chyme and get rid of waste in the body. It also helps absorb vitamins made by commensal bacteria. This bacteria breaks down fibers and sugars into short chain fatty acids.
It also forms the feces and exits through the rectum.
Then your molars grind your food into more petite pieces so your body can mechanically break the food down.
The amylase, the enzymes located in your mouth, chemically break the complex carbohydrates into simple sugars, after this the tongue shapes the food so it is able to swallow and it goes to the esophagus.The esophagus is a tunnel of muscle that connects the pharynx and is then fronted by the upper esophageal sphincter and ends at the lower esophageal sphincter.
After that the food goes to the stomach and temporarily stores the foods and liquids.Then the stomach produces digestive juices like hydrochloric acid and pepsin which break down proteins.
The food goes to the small intestine through the pyloric sphincter. The small intestine is where the absorption of minerals and nutrients occurs. The food first goes through the Duodenum where the food is mixed in with enzymes from the pancreas and and bile from the gallbladder. Then it goes to the Jejunum which absorbs all the nutrients. The last part of the intestine is the Ileum which soaks up the bile acids that return to the liver.
Next it goes through the large intestine which mainly absorbs the water from the chyme and get rid of waste in the body. It also helps absorb vitamins made by commensal bacteria. This bacteria breaks down fibers and sugars into short chain fatty acids.
It also forms the feces and exits through the rectum.
