Podcast
Questions and Answers
What does the sensory root of the trigeminal nerve supply?
What does the sensory root of the trigeminal nerve supply?
Which of the following is NOT a muscle supplied by the motor root of the trigeminal nerve?
Which of the following is NOT a muscle supplied by the motor root of the trigeminal nerve?
Which cranial nerve is responsible for controlling all other facial movements besides chewing?
Which cranial nerve is responsible for controlling all other facial movements besides chewing?
What is the primary function of the trigeminal nerve?
What is the primary function of the trigeminal nerve?
Signup and view all the answers
Which of these is NOT supplied by the Maxillary branch of the Trigeminal nerve (V2)?
Which of these is NOT supplied by the Maxillary branch of the Trigeminal nerve (V2)?
Signup and view all the answers
Which of the following is NOT a branch of the Ophthalmic nerve (V1)?
Which of the following is NOT a branch of the Ophthalmic nerve (V1)?
Signup and view all the answers
What is the name of the triangular gap between the lower ends of the medial and lateral pterygoid plates?
What is the name of the triangular gap between the lower ends of the medial and lateral pterygoid plates?
Signup and view all the answers
What is the terminal branch of the infra-orbital nerve which supplies the skin of the lower eyelid called?
What is the terminal branch of the infra-orbital nerve which supplies the skin of the lower eyelid called?
Signup and view all the answers
Which of the following structures does the Maxillary nerve (V2) NOT supply?
Which of the following structures does the Maxillary nerve (V2) NOT supply?
Signup and view all the answers
Where does the Posterior Superior Alveolar Nerve enter the maxilla?
Where does the Posterior Superior Alveolar Nerve enter the maxilla?
Signup and view all the answers
Which nerve travels anteriorly to enter the orbit via the inferior orbital fissure?
Which nerve travels anteriorly to enter the orbit via the inferior orbital fissure?
Signup and view all the answers
What is the name of the ganglion where the three divisions of the trigeminal nerve come together?
What is the name of the ganglion where the three divisions of the trigeminal nerve come together?
Signup and view all the answers
What does the Middle Superior Alveolar nerve supply?
What does the Middle Superior Alveolar nerve supply?
Signup and view all the answers
Through which foramen does the Maxillary nerve (V2) exit the skull?
Through which foramen does the Maxillary nerve (V2) exit the skull?
Signup and view all the answers
Which cranial nerves traverse the superior orbital fissure along with the Ophthalmic nerve (V1)?
Which cranial nerves traverse the superior orbital fissure along with the Ophthalmic nerve (V1)?
Signup and view all the answers
What does the Nasopalatine nerve supply?
What does the Nasopalatine nerve supply?
Signup and view all the answers
Which of the following structures are supplied by the Greater Palatine nerve?
Which of the following structures are supplied by the Greater Palatine nerve?
Signup and view all the answers
Which of the following is NOT a branch of the Maxillary nerve (V2)?
Which of the following is NOT a branch of the Maxillary nerve (V2)?
Signup and view all the answers
What is the primary function of the Ophthalmic nerve (V1)?
What is the primary function of the Ophthalmic nerve (V1)?
Signup and view all the answers
What is the function of the Zygomaticofacial nerve?
What is the function of the Zygomaticofacial nerve?
Signup and view all the answers
Which cranial nerve is the largest and has three branches: ophthalmic, maxillary, and mandibular?
Which cranial nerve is the largest and has three branches: ophthalmic, maxillary, and mandibular?
Signup and view all the answers
Where is the trigeminal nerve nucleus located?
Where is the trigeminal nerve nucleus located?
Signup and view all the answers
Which of the following statements is TRUE about the Maxillary nerve (V2)?
Which of the following statements is TRUE about the Maxillary nerve (V2)?
Signup and view all the answers
Flashcards
Trigeminal Nerve (V)
Trigeminal Nerve (V)
The largest cranial nerve responsible for facial sensation and mastication.
Maxillary Branch (V2)
Maxillary Branch (V2)
The part of the trigeminal nerve that supplies sensation to the maxillary region.
Functions of V2
Functions of V2
Provides sensory innervation to maxillary teeth, skin of the face, and oral mucosa.
Motor Functions of Trigeminal
Motor Functions of Trigeminal
Signup and view all the flashcards
Distinction from Facial Nerve
Distinction from Facial Nerve
Signup and view all the flashcards
Middle Superior Alveolar Nerve
Middle Superior Alveolar Nerve
Signup and view all the flashcards
Anterior Superior Alveolar Nerve
Anterior Superior Alveolar Nerve
Signup and view all the flashcards
Posterior Superior Alveolar Nerve
Posterior Superior Alveolar Nerve
Signup and view all the flashcards
Greater Palatine Nerve
Greater Palatine Nerve
Signup and view all the flashcards
Lesser Palatine Nerve
Lesser Palatine Nerve
Signup and view all the flashcards
Nasopalatine Nerve
Nasopalatine Nerve
Signup and view all the flashcards
Zygomatic Nerve
Zygomatic Nerve
Signup and view all the flashcards
Trigeminal Nerve
Trigeminal Nerve
Signup and view all the flashcards
Tensor veli palatini
Tensor veli palatini
Signup and view all the flashcards
Trigeminal nerve divisions
Trigeminal nerve divisions
Signup and view all the flashcards
Gasserion ganglion
Gasserion ganglion
Signup and view all the flashcards
Ophthalmic nerve (V1)
Ophthalmic nerve (V1)
Signup and view all the flashcards
Maxillary nerve (V2)
Maxillary nerve (V2)
Signup and view all the flashcards
Mandibular nerve (V3)
Mandibular nerve (V3)
Signup and view all the flashcards
Infraorbital nerve
Infraorbital nerve
Signup and view all the flashcards
Pterygo-maxillary fissure
Pterygo-maxillary fissure
Signup and view all the flashcards
Branches of the ophthalmic nerve
Branches of the ophthalmic nerve
Signup and view all the flashcards
Pterygopalatine fossa
Pterygopalatine fossa
Signup and view all the flashcards
Study Notes
Trigeminal Nerve - Maxillary Branch (V2)
- The maxillary branch (V2) is a branch of the trigeminal nerve (CN V).
- Knowledge of the trigeminal nerve is important for dental professionals.
- The trigeminal nerve is the largest cranial nerve.
- It has three divisions: ophthalmic (V1), maxillary (V2), and mandibular (V3).
- The learning outcomes include describing the function of the maxillary branch, outlining the anatomical regions it supplies, and explaining its relevance to dentistry.
- Each branch of the trigeminal nerve has a specific path/origin and designated functions.
- The maxillary nerve emerges from the skull via the foramen rotundum.
- It enters the pterygopalatine fossa.
- From there it splits into 4 branches: zygomatic, infraorbital, posterior superior alveolar, and pterygopalatine.
- The maxillary nerve is responsible for sensory input to the upper teeth, maxilla, nasal cavity, gums, sinuses and skin.
- Motor branches to the muscles of mastication include the masseter, temporalis, medial pterygoid, lateral pterygoid, and anterior belly of digastric.
- The sensory part of the maxillary nerve is the afferent nerve.
- The nerve function is to sense touch, pain, and temperature from the face, in addition to controlling muscles for chewing.
Learning Outcomes
- Students will be able to describe the maxillary branch's function and how it's relevant to dentistry.
- Describe anatomical regions the maxillary nerve supplies.
- Dental professional knowledge and patient management depend on this knowledge.
Nerve Roots
- Each trigeminal nerve is a short trunk of motor and sensory roots.
- The motor root is thinner and responsible for controlling chewing muscles.
- The thicker sensory root is for sensory facial information (touch, temperature, and pain).
What is supplied?
- Sensory (Afferent) roots: maxillary dentition, mandibular dentition, skin of face/head, oral mucosa, nasal mucosa, air sinuses, and meninges.
- Motor (Efferent) roots: muscles of mastication (masseter, temporalis, medial pterygoid, lateral pterygoid, and anterior belly of digastric), mylohyoid, tensor tympani, and tensor veli palatini.
Brain Origin
- The trigeminal nerve arises from the pons.
- It has one motor nucleus and three sensory nuclei.
Pathway from Skull
- The ophthalmic nerve enters the orbit via the superior orbital fissure.
- The maxillary nerve leaves via the foramen rotundum, enters the pterygopalatine fossa, then exits via the infraorbital canal and infraorbital foramen.
- The mandibular nerve leaves via the foramen ovale.
Gasserion Ganglion
- The trigeminal nerve divisions merge at the Gasserion ganglion.
- Within the brain stem, signals travel through the trigeminal nerve to specialized clusters of neurons called the trigeminal nerve nucleus.
Ophthalmic Nerve (V1)
- The smallest division of the trigeminal nerve.
- Carries sensory information via the superior orbital fissure of the sphenoid bone.
- It supplies; the conjunctiva, cornea, eyeball, orbit, forehead, ethmoidal and frontal sinuses, and portions of the dura mater.
- It has branches: lacrimal, frontal, nasociliary, zygomatic.
- These supply the face with sensation.
Pterygo-maxillary fissure
- Located between the posterior surface of the maxilla and the pterygoid process of the sphenoid bone.
- It fills the triangular gap between the lower ends of the medial and lateral pterygoid plates.
- The maxillary nerve enters via foramen rotundum.
Maxillary Nerve (V2)
- Emerges from the skull via the foramen rotundum.
- Enters the pterygopalatine fossa.
- Divides into four branches: zygomatic, infraorbital, posterior superior alveolar, and pterygopalatine.
- Supplies the upper teeth, hard and soft palate, maxillary sinus, and skin.
- The nerve is purely sensory.
Infraorbital Nerve
- The terminal branch of the maxillary nerve.
- Enters the orbit at the inferior orbital fissure.
- Runs in the infraorbital groove.
- Leaves the orbit at the infraorbital foramen, supplying the face.
- Has branches responsible for sensation to the face: middle superior alveolar nerve, anterior superior alveolar nerve, and palpebral, nasal and labial nerves.
Terminal Branches
- Arise at the infraorbital foramen.
- Palbebral nerve supplies the skin of the lower eyelid.
- Nasal nerve supplies the skin of the side of the nose.
- Labial nerve supplies the skin and oral mucosa of the upper lip.
Posterior Superior Alveolar Nerve (V2)
- Leaves the pterygopalatine fossa through the pterygomaxillary fissure.
- Runs onto the tuberosity of the maxilla to supply buccal gingivae of maxillary molars
- Enters maxillary sinus, 1st, 2nd, and 3rd maxillary molars.
Middle & Anterior Superior Alveolar Nerves
- Arise from the infraorbital nerve in the orbit.
- The middle nerve supplies the maxillary premolars and the mesio-buccal root of the first maxillary molar.
- The anterior nerve supplies the maxillary incisors and canines.
Pterygopalatine Nerves
- Three branches: greater palatine, lesser palatine, and nasopalatine.
- Involved in sensory innervation.
Greater Palatine Nerve
- Passes through the greater palatine canal and onto the hard palate at the greater palatine foramen.
- Gives off nasal branches.
- Supplies much of the hard palate's mucosa and palatal gingivae (except incisive papilla).
Lesser Palatine Nerve
- Passes through the greater palatine canal to the lesser palatine foramen.
- Supplies the soft palate.
Nasopalatine Nerve
- Enters the nasal cavity through the sphenopalatine foramen.
- Supplies part of the nasal septum.
- Passes through the incisive canal on the hard palate.
- Supplies the oral mucosa around the incisive papilla.
Zygomatic Nerve
- Travels anteriorly through the inferior orbital fissure to enter the orbit.
- Divides into two branches: zygomaticofacial and zygomatictemporal nerves.
- Innervates skin of the cheeks.
Additional Notes
- There are diagrams included in the presentation and you may find these helpful for understanding the nerves' position and branches.
- A quiz is available to assess your understanding of the information presented.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
Test your knowledge of the maxillary branch of the trigeminal nerve, crucial for dental professionals. This quiz covers its anatomy, functions, and significance in dentistry, focusing on its sensory and motor roles. Review the branches and regions supplied by this nerve branch for a better understanding of its clinical importance.
