Answer: Option A
Explanation:
Most mechanical processing of food occurs in the oral cavity and stomach.
Mechanical processing of food is an important process during digestion.
It starts in the mouth, where the teeth helps in chewing and breaking down of food into pieces that are more easily digested, while saliva mixes with food to begin the process of breaking it down into a form easily absorbed by the body. From the mouth, the simpler form passes through the throat, oesophagus to the stomach.
At the stomach, a sac-like organ with strong muscular walls, gastric acid and several enzymes continue to break down the food. From the stomach, it moves to the small intestine where break down is completed and it is eventually absorbed as nutrients into the bloodstream.
