Question

mechanical digestion takes place mainly in which two organs of the digestive system?
a the stomach and small intestine
b the mouth and small intestine
c the small intestine and large intestine
d the mouth and stomach

Explanation:

Mechanical digestion in the mouth involves chewing to break food into smaller pieces. In the stomach, muscular contractions churn food. These are the main sites of mechanical digestion in the digestive system.

Answer:

d. the mouth and stomach