Concise and easy to access notes on the anatomy of the head for first year dental students.
Covers the oral cavity (with vasculature, nerve supply and lymphatic drainage), the tongue, nasal cavity, neurocranium, viscerocranium, cranial fossa & foramina, face & scalp and mastication.
Oral Cavity
• Oral Cavity Proper: space within upper and
lower dental arches
• Vestibule: space between teeth and mucosal
inner lining of lips / cheek
• Frenulum: tiny mucous membrane, securing
tongue to floor of mouth
• Oropharyngeal Isthmus: connects oral cavity
proper to oropharynx
• Hard palate (anterior) = BONY: palatine
process of maxilla + horizontal plate of palatine
• Soft palate (posterior) = MUSCULAR
Salivary Glands
• Parotid = SEROUS: duct enters mouth near
upper 2nd molar
• Submandibular = SEROMUCOUS: duct
enters floor of mouth
• Sublingual = MUCOUS: 16-20 ducts open
to floor of mouth
• Minor: background secretions flush oral
surfaces
Cheeks
• Enclose buccinators that are encapsulated in
fat
• Nerve supply by buccal branches of CN V3
• Arterial supply buccal arteries (maxillary
artery)
See notes on tongue on a separate page
, Oral Cavity Vasculature
Arterial Supply
• From branches of the external carotid: maxillary, facial & lingual arteries
Venous Drainage Pterygoid plexus
Pterygoid Plexus veins
• Veins generally
accompany arteries • Cluster of veins located in infratemporal
of the same name fossa (between temporalis & pterygoid) Maxillary vein
• Drain into internal • Includes:
& external jugular o Greater + less palatine veins Retromandibular vein
veins o Sphenopalatine veins
• Some veins join o Superior + inferior alveolar veins
pterygoid plexus o Muscular veins External + internal
jugular vein
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