Difficulty: Medium
Average Score: 80%
Entry Exam
Where does digestion begin in the digestive system?
Correct answer
B
Rationale
Digestion begins in the oral cavity where food is broken down into smaller pieces by chewing and mixed with saliva containing enzymes that start the process of breaking down carbohydrates. This mixture of food and saliva then travels down the esophagus into the stomach for further digestion. The oral cavity is where the mechanical and chemical breakdown of food initiates, setting the stage for the rest of the digestive process.