Draw a neatly labeled diagram showing a peristaltic movement in esophagus Explain the importance of mucus on the walls of food pipe.

Explanation

1) The stomach acts like a washing machine , churning the food around to break it into even smaller pieces.
2) Mechanical mixing of food in stomach occurs by peristalsis , which is waves of muscular contractions that move along the stomach wall.
3) The contractions of the stomach muscles squeeze and mix the food with the acids and juices of the stomach.
4) The digestive juices turns the food into smooth porridge like consistency called chyme.
5) As the process of digestion in the stomach nears completion , the contractions of the stomach decrease.