Podcast
Questions and Answers
What is the primary function of the maxillary branch of the trigeminal nerve?
Which anatomical regions are primarily supplied by the maxillary branch of the trigeminal nerve?
Which of the following is NOT supplied by the maxillary branch of the trigeminal nerve?
How is the trigeminal nerve best distinguished from the facial nerve?
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Which type of roots compose the short trunk of the trigeminal nerve?
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What is a key relevance of the maxillary branch of the trigeminal nerve to dental practice?
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Which muscle is NOT affected by the motor root of the trigeminal nerve?
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Which functional category does the sensory root of the trigeminal nerve belong to?
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Which of the following accurately describes the trigeminal nerve?
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What is the origin of the trigeminal nerve?
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Which foramen does the maxillary nerve exit the skull through?
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Which nerve is NOT a branch of the ophthalmic nerve (V1)?
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What structures does the maxillary nerve supply?
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Where do the three divisions of the trigeminal nerve come together?
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Which of the following supplies sensory information to the cornea?
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What is the primary function of the maxillary nerve?
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Which ganglion is associated with sensory signals of the trigeminal nerve?
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What does the infra-orbital nerve primarily supply?
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Which division of the trigeminal nerve is the largest?
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What does the palpebral nerve supply?
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Which structure receives its supply from the nasopalatine nerve?
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What does the middle superior alveolar nerve primarily supply?
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What is the role of the greater palatine nerve?
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What function does the zygomaticofacial nerve serve?
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Which nerve runs onto the tuberosity of the maxilla and supplies maxillary molars?
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The trigeminal nerve is also known as which cranial nerve number?
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Through which fissure does the zygomatic nerve enter the orbit?
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Which nerve is primarily responsible for supplying the skin overlying the middle part of the face?
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What area does the lesser palatine nerve primarily supply?
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Study Notes
Trigeminal Nerve - Maxillary Branch (V2)
- The trigeminal nerve is the 5th and largest cranial nerve
- The trigeminal nerve has 3 divisions: ophthalmic, maxillary, and mandibular
- The maxillary nerve exits the skull via the foramen rotundum
- It enters the pterygopalatine fossa
- Within the pterygopalatine fossa, it branches into 4 main branches:
- Zygomatic
- Infraorbital
- Posterior superior alveolar
- Pterygopalatine
Maxillary Nerve (V2)
- The maxillary nerve is a sensory nerve, meaning it doesn't control muscles
- It supplies:
- Maxillary teeth and supporting structures
- Hard and soft palate
- Maxillary sinus
- Much of nasal cavity
- Skin over the middle part of the face
Infraorbital Nerve
- The infraorbital nerve is the terminal branch of the maxillary nerve
- It enters the orbit via the inferior orbital fissure
- It runs in the infraorbital groove
- It exits the orbit via the infraorbital foramen
- This nerve has these branches:
- Middle superior alveolar nerve
- Anterior superior alveolar nerve
- Terminal branches (palpebral, nasal, and labial)
Terminal Branches
- The terminal branches arise from the infraorbital foramen
- Palpebral nerve supplies skin of the lower eyelid
- Nasal nerve supplies skin on the side of the nose
- Labial nerve supplies skin and oral mucosa of the upper lip
- Labial nerves also supply the labial gingivae of the anterior maxillary teeth, as well as skin of the cheek bordering the maxilla
Posterior Superior Alveolar Nerve
- The posterior superior alveolar nerve exits the pterygopalatine fossa through the pterygomaxillary fissure
- It branches to the tuberosity of the maxilla, and supplies buccal gingivae of maxillary molars.
- It then passes bone to supply the maxillary sinus.
- It also supplies the third, second, and first maxillary molars, with the palatal and disto-buccal roots of the first.
Middle & Anterior Superior Alveolar Nerves
- These nerves arise from the infraorbital nerve within the orbit
- The middle nerve supplies premolars and the mesio-buccal root of the first maxillary molar
- The anterior nerve supplies the incisors and canines
Pterygopalatine Nerves
- The pterygopalatine nerves have 3 parts:
- Greater palatine nerve
- Passes through greater palatine canal and onto the hard palate
- Gives rise to branches in the nasal canal, supplying lateral nasal wall mucosa
- On the palate supplies much of hard palate and palatal gingival tissue except near incisive papilla
- Lesser palatine nerve
- Passes through the greater palatine canal to the lesser palatine foramen
- Supplies the soft palate
- Nasopalatine nerve
- Enters nasal cavity through sphenopalatine foramen
- Supplies part of the nasal septum
- Passes through incisive canal on the hard palate
- Supplies oral mucosa around the incisive papilla
- Greater palatine nerve
Zygomatic Nerve
- Travels from the pterygopalatine fossa to inferior orbital fissure
- It has two divisions:
- Zygomaticotemporal nerve
- Sensory innervation to the temple
- Zygomaticofacial nerve
- Emerges on the cheek and innervates skin around the prominence of the cheek
- Zygomaticotemporal nerve
GDC Learning Outcomes
- Describe relevant and appropriate dental, oral, craniofacial and general anatomy
- Explain their application to patient management
Intended Learning Outcomes
- Describe the function of the maxillary branch of the trigeminal nerve (CN V)
- Outline the anatomical regions it supplies
- Explain the relevance of the maxillary branch of the trigeminal nerve to dentistry
Resources
- Anatomy.tv
- Acland's Video Atlas of Human Anatomy
- Teach Me Anatomy
- Netter's Head and Neck Anatomy for Dentistry (Chapter 8 and 21)
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Description
Explore the anatomy and functions of the maxillary branch of the trigeminal nerve in this quiz. Learn about its main branches, sensory functions, and areas it supplies. Test your knowledge on the structure and significance of the maxillary nerve.
