Which of the following is the opening through which food enters the body?

The mouth, also known as the oral cavity, is the opening through which food enters the body. It is the first part of the digestive system and plays an important role in the initial digestion of food.

The buccal cavity, also called the vestibule, is the space between the teeth, lips, and cheeks in the mouth. It is the area of the mouth that is outside of the teeth and gums.

The mouth and buccal cavity have several important structures that are involved in the process of digestion.