Oral cavity Flashcards
Extend from where to where?
From Lips to the entrance of the Pharynx
Structure/Parts of the oral cavity?
- Tongue
- Teeth
- Salivary Gl
Borders of the oral cavity
Rostrally - LIPS Laterally - CHEEKS ROOF - HARD PALATE (Palatun durum) Ventrally - TONGUE FLOOR - Suprahyal Muscles
What does the ORal Cavity communicate with caudally?
OROPHARYNX
Is the ISTMUS FAUCIUM formed by the:
- Root of the Tongue
- Soft palate (Palatum Molle)
Oral cavity is divided by teeth and the alveolar process into the?
VESTIBULE and ORAL CAVITY PROPER
- They communicate via:
- Interdental spaces (DIASTEMMA) and
2 The space btw the last morals
CAVUM ORIS PROPRIUM
Enclosed by teeth
Limited caudally by ARCUD PALATOGLOSSUS
Structures of the CAVUM ORIS PROPRIUM (inside)
CAVUM ORIS PROPRIUM - Enclosed by the teeth
- Limited caudally by Arcus palatoglossus
1.Vestibule
2.canine Tooth
2A PHILTRUM
3. HARD PALATE
4. SOFT PALATE
5. TOUNGE
6. SUBLINGUAL CARUNCULA
7. PALATOGLOSSAL ARCH (limited caudaly by)
8. PALATINE TONSIL
9. FRENULUM
Where do we find the DIASTEMMA ?
Space btw the incissors and check teeth
The parts of the LIP?!
LIPS = Labia Oris!
- UPPER LIP (labium superius)
- LOWER LIP (Labium infernus)
- labial GLANDS (Latvia Glandularis)
- In the submucusa
- Well Developed near the Angle of the MOUTH
What is the philtrum?
- Distinkt median clear from the nasal septum to the upper LIP
- Devides the upper LIP of carnivores and small ruminants
Interspecial differences regarding the lower LIP
In carnivores + Pigs = SMALLER
In OX and EQ = presents the CHIN
Steuctures in/around the ORAL CAVITY
- LABIA ORIS
- PHILTRUM
- RIMA ORIS
- ANGULUS ORIS
- CHEECS (BUCCAE)
- BUCCAL GLANDS - GUMS (GINGIVAE)
- margo gingivalis
- Papilla gingivalis
- Sulcus gingivalis - HARD PALATE (Palatum Durum)
- RAPHE PALATI
- RUGAE PALATI
- PAPILLA INCICIVA - (Ductus INCICIVA) - SOFT PALATE (Palatum Molle, velum Palatini)
- UVULA (sus) - Muscles
- PALATOGLOSSAL ARCHES (Arcus palatoglossus)
- PALATOPHARYNGEAL ARCHES
- FOSSA TONSiLLARIS (car)
RIMA ORIS
Oral Cleft!
= Entrance of the oral cavity
- bounded by edges of the upper lips
- unit on each side of the ANGULIS ORIS
Where does the RIMA ORIS unite?
On each side at the:
ANGULUS ORIS
CHEEKS (BUCCAE))
- Forms?
- Attached to?
- Which portion contains which Muscle?
- Lateral wall of the vestibule (BUCCAL VESTIBULE)
- Alveolar margin of the mandible and maxilla in the region of the cheek teeth.
- Caudal portion contains M.Masseter
What are the BUCCAL GLANDS, where are they located and where does their ducks open?
Special about the OX and CAR, but what?
Located between the oral mucosa and BUCCAL Muscles!
- DORSAL BUCCAL GLAND
- VENTRAL BUCCAL GLAND
- MIDDLE BUCCAL GLAND (OX)
- Their ducts open into the VESTIBULE
- DORSAL BUCCAL GLAND in carnivores is located MEDIAL to the ZYGOMATIC ARCH
= ZYGOMATIC GLAND
What are the parts of the GUMS?
And special about the RUMINANTS?
- It is a part of the ORAL MUCOSA
- United to the Periosteum of the ALVEOLAR PROCESS of the JAWS
- MARGO GINGIVALIS:
encircle the NECK of the teeth - PAPPILLA GINGIVALIS (interdentalis): Mucosal elevation between the teeth.
- SULCUS GINGIVALIS:
Groove inbetween GINGIVA and TOOTH
RU:
- GUMS are MODIFIED
= DENTAL PADS ( PULVINUS DENTALIS)
- DENTAL pads takes the place of the Upper INCISSORS
Which part of the oral cavity does the HARD PALATE form?
What is it boardered by?
Hard Palates mucosa in horses?!s
- It forms the roof of the oral cavity.
- Bounded LATERALLY and ROSTRALLY by:
UPPER DENTAL ARCH - In horses, its mucosa contains VENOUS PLEXUSES
Special structures of the HARD PALATE?!
- RAPHE PALATI
- RUGAE PALATiNAE
- PAPILLA INCICIVA
Hard Palate
RAPHE PALATI
- Median line
- Devides the hard palate into two symetrical halves!
Hard Palate
RUGAE PALATINAE
+ special about the OX, but what?
+ Numbers of Palatine ridges in diff species
- on either side of the
PALATINA RAPHE - CORNIFIED
- In OX: Crests of the ridges are studded by CORNIFIED PAPILLAE
# of PALATINE RIDGES 🐶: 6-10 pairs (dog) 🐷: 20-23 (pig) 🐮: 15-20 (OX) 🐴: 16-18 (horse)
Hard Palate PAPILLA INCISIVA What is it? Where to be Found? Conceals the?
- Elevation of mucos membranen at the ROSTRAL end of RAPHE PALATI
- Found between:
- UPPER INCISSORS
- DENTAL PAD - Orfices of the DUCTUS INCISIVI
SOFT PALATE
+ special in PiG?
= PALATUM MOLLE, VELUM PALATINUM
- Caudal continuation of the hard palate
- Extends into PHARYNGEAL CAVITY
- LIES NEAR the EPIGLOTTIS
- Forms the ROOF of the OROPHARYNX
- Its DORSAL surface forms the FLOOR of the NASOPHARYNX
- In PIG: Rudimentary UVULA🐷
PALATUM MOLLE, VELUM PALATINUM
- Caudal continuation of the ?
- Extends into ?
- LIES?
- Forms the?
- Its ? surface forms the ?
- Hard Palate
- PHARYNGEAL CAVITY
- NEAR the EPIGLOTTIS
- ROOF of the OROPHARYNX
- DORSAL surface forms the FLOOR of the NASOPHARYNX
