The start of mechanical digestion

One remarkable ability of the human body is changing food into nutrients, allowing us to survive and thrive.

When we eat food, it ends up in our digestive system that is composed of several organs. The goal is to turn the food into nutrients.

• Mechanical digestion starts in the mouth, where food is chewed into small pieces and mixed with saliva.
• When this mass (the bolus) lands in the stomach, it is acidified and further pressed until it becomes a liquid paste called chyme.