anatomy of oral cavity Presented By Dr. MUSTAFA HADDAD MSD , MCU 1st Year , 1st Semester anatomy of oral cavity

1. ANATOMY
OF THE
ORAL
CAVITY
Presented By Dr. MUSTAFA HADDAD
MSD , MCU 1st Year , 1st Semester

2. I. LIPS
1. Skin – contains hair follicles and sebaceous
glands
2. Superficial Fascia- contains some fats
3. Orbicularis Oris muscle – serves as
sphincter of the mouth
4. Submucous tissue – contains vessels,
mucous labial glands and labial branches of
facial artery
5. Mucous membrane – innermost layer
5 LAYERS
These are two fleshy folds that circumscribe the mouth and closes the
cavity.

3. II. MOUTH PROPER
Oral Cavity ProperOral Vestibule

4. A. ORAL VESTIBULE
Boundaries:
*Anteriorly by lips.
*Laterally by cheeks.
*Posteriorly and
medially by teeth and
gums.

5. B. ORAL CAVITY
PROPER
Boundaries:
1. Anteriorly laterally by
teeth and gums
2. Superiorly by the palate
3. Inferiorly by the tongue
and the floor of the
mouth
4. Posteriorly by opening
into the pharynx

6. III. FLOOR OF THE MOUTH
Lingual frenulum
(connects the tongue to
the floor of the mouth)
Papillae ( openings of
submandibular duct)
Sublingual fold
(passes lateraly and
backwards from the
papilla and overlies the
sublingual gland)
Each sublingual compartment contains submandibular gland and
dcuts, lingual and hypoglossal nerve and the siblingul vessels.

7. IV. SUBLINGUAL GLAND
 Smallest salivary gland
 Indicated by the sublingual fold, found
between the alveolus and anteiror part of
the tongue
 Lesser sublingual duct (Rivini’s ducts) –
opens into the floor of the mouth
 Greater sublingual duct (Bartholin’s ducts)
opens on the sublingual caruncle

8. V. SUBMANDIBULAR
(SUBMAXILLARY) GLAND
 Located at the submandibular fossa
below mylohyoid muscle.
 Submandibular duct (Wharton’s
ducts) – opens at the sublingual
papillae

9. VII. GINGIVA
Consists of dense vascular fibrous tissue which is covered by mucuos membrane and
attached to the alveolar margins of the jaws.

10. VII. TEETH

11. VIII. HARD PALATE
Median
raphe
o Covered by mucous membrane and
forms a partition between the oral
and the nasal cavity
o The mucous membrane and the
periosteum cannot be separated
(mucoperiosteum)

12. IX. SOFT PALATE
Movable portion and is attached to the hard palate
Palatine tonsil is also called “Isthmus of Fauces” or the Tonsilar Sinus

13. X. TONGUE
Mobile mass of
muscles lying on the
floor of the mouth
and associated with
functions of taste,
chewing, swallowing
and speaking

14. PAPILLAE OF THE
TONGUE
TASTE DISTRIBUTION

15. Muscles of the Tongue
a. Extrinsic muscles
 responsible for changing the
position of the tongue
a. Gionioglossus
b. Geniohyoid
b. Intrinisic muscles
 change the shape of the tongue
a. Superior longitudinal muscles
b. Inferior longitudinal muscles
c. Transverse muslce
d. Vertical muscles