Final answer:
The term 'Buccal' refers to the cheek, describing the oral cavity's sidewalls lined with mucous membranes and containing buccinator muscles.
Step-by-step explanation:
The term that pertains to the cheek is b) Buccal. The buccal area refers to the oral cavity's sidewalls, which are made up of skin on the outside and are lined with mucous membrane on the inside. The mucous membrane is composed of non-keratinized, stratified squamous epithelium. The buccinator muscles, situated between the skin and mucous membranes, play an essential role in managing the movement of food inside the mouth and are active during speech. The term 'buccal' specifically relates to this region of the cheeks and is distinct from the other options listed, which pertain to different body parts or functions.