The vestibule is a bony structure located between the cochlea and the three semicircular canals.
People with bony hands or faces, for example, would have exceedingly thin hands or faces with very little flesh covering their bones. Teeth are hard, bony structures that are placed in the oral cavity and are used to grab, rip, cut, or grind food before it is eaten.
The bones that are used for mastication are the mandible and maxilla. The palate divides the lower part of the maxilla. The oral cavity is defined by the space between the palate and the jaw. The temporomandibular articulation connects the mandible and maxilla.
Thus, it is a vestibule.
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