The lateral walls of the oral cavity are formed by the cheeks, which are covered externally by the integument and contain the buccinator muscle that is helpful for mastication.
What is the role of the Buccinator in mastication?
The buccinator muscle, a little quadrilateral facial muscle, is what gives cheeks their shape.
Along with the levator labii superioris alaeque nasi, levator labii superioris, zygomaticus major, zygomaticus minor, levator anguli oris, risorius, depressor labii inferioris, mentalis, orbicularis oris, and incisive superior and inferior muscles, it is a member of the buccolabial group of facial muscles.
Numerous starting locations in the buccinator serve as the foundation for the division of the muscle fibres into superior, inferior, and posterior sections.
The primary muscle of the cheek, which gives it structure and tightness, is this one. In order to maintain the food bolus central in the oral cavity and to avoid biting the cheeks during mastication, it compresses the cheek against the molar teeth.
Hence, the correct answer is integument and buccinator muscles.
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