Final answer:
The oral cavity, also known as the buccal cavity, is the cavity that contains the teeth and tongue, playing a key role in the initial digestion and taste sensation.
Step-by-step explanation:
The cavity that contains the teeth and tongue is known as the oral cavity or buccal cavity. This cavity is crucial for the ingestion and initial stages of digestion. Mastication, or the chewing action of the teeth, breaks down the food into smaller particles as the first step in food processing. Along with the teeth and tongue, the cheeks, and palate also help frame the mouth. The tongue is vital for manipulating the food for chewing and preparing it for swallowing. Nerves, such as the facial and glossopharyngeal nerves, also play roles in the oral cavity, with the facial nerve responsible for taste and salivation in the anterior part of this cavity.