oral cavity Flashcards
The oral cavity is conveniently divided by the arch formed by the teeth and gums into:
Oral Vestibule
Oral Cavity Proper
- lies between the gums and the teeth
Oral Vestibule
- lies behind and within the arch of teeth
Oral Cavity Proper
Anteriorly by the lips,
Laterally by the cheeks,
Superiorly/Inferiorly by the mucolabial and mucobuccal folds, and
Posteriorly and medially by the teeth and gums.
The Oral Vestibule
Labial Vestibule
upper
The Labial Vestibule
lower
Anteriorly and laterally by the teeth and gums,
Superiorly by the palate (hard and soft),
Inferiorly by the tongue and the floor of the mouth, and
Posteriorly by the opening into the pharynx.
The Oral Cavity Proper
Anterior 2/3 of the tongue,
Lingual frenulum,
Lingual vein,
Sublingual caruncle,
Sublingual folds
Fimbriated fold
The Sublingual Region
consist of dense vascular fibrous tissue which is covered by mucous membrane and is attached to the alveolar margins of the jaw.
they are continuous with the mucosa of the oral vestibule externally and the palate or the floor of the mouth internally
Gums and Gingivae
forms the superior wall or the roof of the oral cavity proper.
Hard and Soft Palate
- Covered by mucoperiosteum and forms a partition between the oral and nasal cavities
The Hard Palate
is a longitudinal ridge extending from the uvula to the incisive papilla.
Median raphe
is a small projection of the mucosa indicating the location of the incisive foramen and the anterior limit of the median raphe.
Incisive papilla
are about six distinct elevation crossing the anterior part of the hard palate.
Transverse palatine process or palatine rugae
are small inconstant pits on the posterior margin of the hard palate on either side of the median raphe.
Fovea palatine
Is the posterior movable portion of the palate, extending from one side of the pharynx to the other, and attached to the posterior border of the hard palate.
The Soft Palate
is the median conical projection marked by median raphe.
Uvula
are free margins of the soft palate and splitting into two parts as they approach the lateral wall.
Palatine arches
or anterior pillar of fauces or anterior palatine arch encloses the palatoglossus muscle.
Palatoglossal arch
encloses the palatopharyngeus muscle.
Palatapharyngeal arch
A mobile mass of muscles lying on the floor of the mouth and associated with the function of taste, chewing, swallowing, and speaking.
The Tongue
is the lower portion of the posterior half of the tongue through which the extrinsic muscles, blood vessels and nerves become connected with the organ. It is attached to the mandible and the hyoid bone
Root
anterior part of the tongue, made up of interlacing skeletal muscles.
Body
