The principle function of the digestive system is to prepare food for cellular utilization. This involves the following functional activities:
Ingestionthe taking of food into the mouth.
Masticationchewing movement to pulverize food and mix it with saliva.
Deglutitionthe swallowing of food to move it from the mouth to the pharynx and into the esophagus.
Digestionthe mechanical and chemical breakdown of food material to prepare it for absorption.
Absorptionthe passage of foo..