THE DIGESTIVE SYSTEM BEGINS AT THE MOUTH
begins when you start to chew food in smaller pieces that are mixed with saliva to continue the process, and go to the esophagus.
The esophagus directs the food to the stomach. There cells release gastric fluids that break down the food into smaller pieces
INTESTINES: small and large
The stomach directs the pieces of food to the small intestine where they are break down into smaller pieces. After the undigestive food, water, mucus, and other substances pass to the large intestine that absoves all the remaining water and the others remaining materials leave the body.
- Horse - 21 meters
- Cat - 1.7 meters
- Human - 7 meters
Human Digestive System