The buccal cavity refers to which part of the body?

• A. Nasal cavity
• B. Buccal cavity
• C. Gastric cavity
• D. Esophageal cavity

Answer: (B)

The space being referred to is the mouth. The buccal cavity is the inside of the lips and cheeks where the teeth reside and where food is chewed and mixed with saliva, marking the entry point of digestion. It’s bounded by the lips and cheeks in front and sides, the palate above, and the floor of the mouth below, with the tongue playing a key role in moving food around.

The other terms point to different areas: the nasal cavity is inside the nose and handles air, not food; the gastric cavity isn’t a standard term for the stomach’s interior (that would be the gastric lumen); and the esophagus is a tube that carries food to the stomach, not a cavity within the mouth.