Answer:
In the Digestive tract, the mouth is first on the list. This is where Mechanical digestion takes place. Teeth crush, grind, break, shred, and mash food into small pieces that are easy to swallow and digest. Saliva is an enzyme that starts to break carbohydrates if any. That's why the mouth also performs Chemical Digestion. Once the food is ready to be swallowed, it is pushed into the Pharynx and into the esophagus. The esophagus squeezes food with rhythmic muscle contractions-this is called Peristalsis. We have traveled in 3 out of the 8 organs in the digestive tract.
Step-by-step explanation: