Question

unit examinations content
page 43 of 51

question 42

where does the mechanical process of digestion begin?
a mouth
b esophagus
c stomach
d small intestine
e large intestine

Explanation:

Mechanical digestion involves physical breakdown of food. In the mouth, chewing (mastication) starts this process by breaking food into smaller pieces. The esophagus transports food, the stomach and intestines further digest but don't start mechanical digestion. So the mechanical process of digestion begins in the mouth.

Answer:

A. mouth