The mouth is where digestion begins, and it breaks down food into smaller particles. ... This helps form the bolus, which they can then swallow. Biology. The hard palate is the roof of the mouth.

Where the average person's digestive process takes 72 hours, Dr. Iroku's step-by-step explainer should only take a few minutes to read. PS, There’s More 5 Tips For Speeding Up Digestion ...