Oral Cavity Flashcards
Boundaries of oral cavity
Anteriorly; lips
• Laterally; cheeks
• Superiorly; Hard &soft
palate
• Inferiorly; diaphragma
oris, tongue
• Posteriorly; Istmus
faucium
Oral cavity is separated into
1 oral vestibule
2 oral cavity proper
Arteries of lips
Superior and inferior labial arteries (facial artery)
Veins of lips
Superior and inferior labial veins (facial vein)
Lymph nodes of lips
Submental and submandibular lymph nodes
Nerves of lips
• Superior labial branches
of infraorbital nerve
(maxillary nerve). Sensory
• Inferior labial branches
of mental nerve
(mandibular nerve). Sen sor
• Facial nerve. Motor
Vessels of cheeks
: Buccal branch of
maxillary artery
• V: Same with aa.
Lymph nodes of cheeks
Submandibular parotid lymph nodes
Nerves of cheeks
N: Buccal branch of
mandibular nerve
(general sensation from
skin and mucosa)
• Facial nerve (motor
innervation of
buccinator muscle)
Vessels of Teeth
Inferior alveolar artery
• Anterior superior
alveolar artery
• Posterior superior
alveolar artery
• Inferior alveolar veins
• Superior alveolar veins
• Emissary veins
Lymphatics of Teeth
• Submandibular LN
• Submental LN
• Deep cervical LN
Nerves of Teeth
• Anterior superior
alveolar nerve
• Middle superior alveolar
nerve
• Posterior superior
alveolar nerve
• Inferior alveolar nerv
Muscles of Soft Palate
• Tensor veli palatini muscle
• Levator veli palatini muscle
• Palatoglossus muscle
• Palatopharyngeus muscle
• M. uvulae
Tensor Veli Palatini Muscle
Mandibular nerve
Only muscle elevating
soft palate
Lavatory veli palatini
Arteries of Palate
Greater palatine artery
(Maxillary artery)
• Ascending palatine
artery (facial artery)
• Palatine branch
(ascending pharyngeal
artery)
Veins & Lymphatics of Palate
• Pterygoid plexus
• Pharyngeal plexus
• Deep cervical lymph
nodes
Nerves of Palate
➢ Sensory;
Greater palatine nerve
Lesser palatine nerve
Nasopalatine nerve
➢ Parasympathics&special
sensory(taste);
Facial nerve
➢ Sympathics;
T1 spinal cord level
Muscles of tounge
● Intrinsic muscles;
• Superior longitudinal m.
• Inferior longitudinal m.
• Vertical muscles
• Transverse muscles
● Extrinsic muscles;
• Genioglossus muscle
• Hyoglossus muscle
• Styloglossus muscle
• Palatoglossus muscle
Except palatoglossal muscle
Hypoglossal nerve
Palatoglossus muscle
Vagus nerve
Vessels of Tongue
Artery;
Lingual artery (external
carotid artery)
• Veins;
Deep lingual vein
(Internal Jugular vein)
Dorsal lingual vein
(Internal Jugular vein)
• Lymph nodes;
submandibular LN
Submental LN
Nerves of Tongue
• Pharyngeal part; taste
and general sensation
are carried by
glossopharngeal nerve
• Oral part; general
sensation is carried by
lingual nerve, taste is
carried by chorda
tympani
