Podcast
Questions and Answers
Which anatomical structure is located within the vestibule of the oral cavity?
Which anatomical structure is located within the vestibule of the oral cavity?
- Gingivae (correct)
- Sublingual papilla
- Palatoglossal arch
- Vermilion
What is the function of the mylohyoid muscles in relation to the floor of the mouth?
What is the function of the mylohyoid muscles in relation to the floor of the mouth?
- Forming a diaphragm for the floor of the mouth (correct)
- Elevating the soft palate during swallowing
- Facilitating the movement of the tongue
- Controlling the inclination of incisor teeth
Which of the following structures is NOT a boundary of the oral cavity?
Which of the following structures is NOT a boundary of the oral cavity?
- Nasal septum (correct)
- Cheeks
- Palate
- Lips
What is the clinical significance of the fold of mucosa covering the pterygomandibular raphe in the cheek?
What is the clinical significance of the fold of mucosa covering the pterygomandibular raphe in the cheek?
Which of the following structures contributes to the roof of the mouth?
Which of the following structures contributes to the roof of the mouth?
Which structure is located in the oropharyngeal isthmus?
Which structure is located in the oropharyngeal isthmus?
Which feature is characteristic of the lips (labia)?
Which feature is characteristic of the lips (labia)?
What is the function of the oral cavity related to mastication?
What is the function of the oral cavity related to mastication?
What is a characteristic feature found in the cheeks (buccae)?
What is a characteristic feature found in the cheeks (buccae)?
Which of the following is a function directly associated with the oral cavity?
Which of the following is a function directly associated with the oral cavity?
Flashcards
Oral cavity boundaries?
Oral cavity boundaries?
Anterior: lips, Lateral: cheeks, Roof: palate, Floor: tongue and floor of mouth proper, Posterior: oropharyngeal isthmus and retromolar region
Lips (labia) key features?
Lips (labia) key features?
Vermilion, Tubercle and philtrum, Nasolabial grooves, Labiomarginal sulci, Labiomental groove, Competent/incompetent lips, Lower lip controls inclination of incisor teeth
Cheeks (buccae) key features?
Cheeks (buccae) key features?
Linea alba ,Opening of parotid duct opposite upper 2nd molar, Fordyce spots (ectopic sebaceous glands) ,Fold of mucosa covering pterygomandibular raphe, Landmark for inserting needle for dental anaesthesia for the infratemporal fossa
Vestibule definition?
Vestibule definition?
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Oral cavity functions?
Oral cavity functions?
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Key features of mouth floor?
Key features of mouth floor?
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Key features of mouth roof?
Key features of mouth roof?
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Oropharyngeal isthmus components?
Oropharyngeal isthmus components?
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Study Notes
- The oral cavity is a complex structure with several key components
Boundaries
- Anterior boundary: lips
- Lateral boundary: cheeks
- Roof: palate
- Floor: tongue and floor of the mouth proper
- Posterior: oropharyngeal isthmus and retromolar region
Lips (labia)
- Vermilion
- Tubercle and philtrum
- Nasolabial grooves
- Labiomarginal sulci
- Labiomental groove
- Competent/incompetent lips are features of the lips
- The lower lip controls incisor teeth inclination
Cheeks (buccae)
- Linea alba
- Opening of parotid duct opposite the upper 2nd molar
- Fordyce spots (ectopic sebaceous glands)
- Fold of mucosa covering pterygomandibular raphe
- Landmark for inserting needle for dental anaesthesia for the infratemporal fossa
Vestibule
- Lies in front of the teeth and behind the lips and cheeks
- Labial, buccal mucosae
- Alveolar mucosa
- Gingivae
- Vestibular sulci with frena
Functions
- Selection and ingestion of food (including taste)
- Mastication and deglutition
- Breathing
- Speech (articulation)
- Offence and defence
- Lips and facial expression
- The smile and grimace
- The kiss
Floor of mouth
- Covered by mylohyoid muscles, forming a diaphragm for the floor
- Tongue
- Sublingual papilla and folds
- Lingual frenum
- Openings of submandibular and sublingual glands
Roof of mouth
- Hard palate-osteology (maxillary and palatine bones)
- Incisive papilla, median palatine raphe, rugae
- Mucoperiosteum
- Soft palate-fibrous skeleton (palatine aponeurosis) and muscles
- Uvula and pillars of fauces
Oropharyngeal isthmus
- Pillars of fauces and crypt for palatine tonsils
- Palatoglossal and palatopharyngeal arches
- Lingual tonsils
- Vallecullae and glosso-epiglottic folds
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