The Digestive System
Poster By: Niki & Daniel
What is the Digestive System?
The Digestive System is the system in which the food that you eat goes through. It consists of the Mouth, Esophagus, Stomach, Liver, Gall Bladder, Pancreas, Large and Small Intestine, Appendix, Rectum, and Anus. There are 2 types of digestion: Mechanical and Chemical. Mechanical digestion is when you chew the food. The food is then broken down by the saliva which is chemical digestion. The following steps of the Digestive System are chemical.
Levels of Organization
Digestive Cell
The Digestive Cell has many Lysomes to digest the food we eat. Lysomes break down the food and that's the job of the Digestive system.
Digestive Tissue
The Digestive Tissue is found in all the organs of the Digestive System. It has many layers that help with the chemical digestion most organs undergo.
The Stomach
This Organ breaks down the food that was chewed by using chemical digestion (stomach acids).
Digestive System
After the food is chewed and sent down the Esophagus it goes to the stomach where it is broken down by a series of stomach acids and powerful enzymes. Then it goes to the small intestine which breaks it down using enzymes (from the pancreas) and bile (from the liver). Then the waste is passed through the Colon (Large Intestine) and is passed through by the process of Peristalsis or contractions. Roughly 36 hours later, it is stored in the rectum and expelled by the anus.
Organism
It takes about a day and a half for the food you intake to go through your whole Digestive System.
Extra Credit!
The structure of the stomach relates to it's function because it has a layer that protects it from eating itself.
Interaction
The Digestive System relates to the Excretory System because both cleanse the body of wastes. It interacts with the Endocrine System because when the waste or gas enters the Rectum, it sends a message to the brain. The Respiratory System and the Digestive System both include the mouth.
Homeostasis
Homeostasis is when the body responds to a change in temperature. The average body temperature is around 98.6*F. If this were to raise, the body would produce sweat, cooling the body down. If the temperature was to drop, the body would begin to shiver. These quick motions would warm the body up. Homeostasis is vital to the survival of the cells.