buccal vestibule

The buccal vestibule is the space external to teeth and gums and internal to lips and cheeks. The proportion of its walls formed by the lips varies according to species depending upon their feeding action. The horse like most herbivores has a relatively small opening. The buccal vestibule opens to the outside rostrally via a U shaped slit the oral fissure. When the mouth is closed the buccal vestibule and the mouth cavity proper connect via spaces between and behind the teeth. These allow free communication between the two sides of the vestibule. Several salivary ducts open into the dorso caudal part of the vestibule: Parotid gland - opens into the cheek on the small parotid papilla, opposite to the caudal part of upper 4 th premolar teeth. Zygomatic gland - the main duct opens in the caudal part of the upper 1 st molar tooth on a small papilla near the vestibular fornix. Submucous glands - minimal in number, confined to the lower lip and adjacent part of the cheek. Secretion occurs through about 10 openings located near the fornix of the vestibule.

유형 Gland
상위 구조물 anatomical space
FMA ID 289320

자주 묻는 질문

What is the buccal vestibule?
The buccal vestibule is the space within the oral cavity bounded by the teeth and gingiva (gums) on one side and the lips and cheeks (buccae) on the other. It communicates with the exterior of the body through the oral fissure (the opening between the lips).
What is the function of the buccal vestibule?
The buccal vestibule serves as a transitional space in the oral cavity involved in food manipulation and swallowing. It traps food during chewing and allows the cheeks and lips to move food back into the mouth toward the teeth and tongue.
What structures define the boundaries of the buccal vestibule?
The buccal vestibule is bounded medially by the teeth and alveolar mucosa (gingiva), laterally and anteriorly by the mucous membranes of the cheeks (buccae) and lips, and opens anteriorly through the rima oris (oral fissure). The superior and inferior fornices (reflected folds) mark the depth of the space.
Where does the parotid duct open in relation to the buccal vestibule?
The parotid (Stensen's) duct opens into the buccal vestibule via a small papilla on the inner surface of the cheek opposite the upper second molar tooth, delivering saliva from the parotid gland into this space.
How does the buccal vestibule vary across species?
The shape and capacity of the buccal vestibule varies considerably among species. Rodents and some primates (like hamsters) have a notably enlarged buccal vestibule (cheek pouches) for food storage. In humans, it is moderate in size and not used for storage.

관련 구조물

mucus body coating mucous body coating mucus cocoon mucous cocoon Mullerian duct ductus paramesonephricus multi cell part structure cell part cluster multicellular anatomical structure multicellular structure multilaminar epithelium laminated epithelium multi-tissue structure multi-tissue structures multi-unit eye

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Data sources: Terminologia Anatomica, Foundational Model of Anatomy, Wikidata.