BRANCHES OF THE TRIGEMINAL NERVE ALL BRANCHES OF TRIGEMINAL NERVE ARE LISTED IN HANDOOUT 'REFERENCE HANDOUT: BRANCHES'

TRIGEMINAL NERVE – SENSORY INNERVATION TO SKIN OF HEAD – 3 DIVISIONS V1 – OPHTHALMIC DIVISION V2 – MAXILLARY DIVISON V3 – MANDIBULAR Boundary- Lateral edge of eye Boundary Lateral edge of mouth

TRIGEMINAL NERVE - V - GSA + SVE V1 - OPHTHALMIC -Sup. Orbital fissure – GSA V2 - MAXILLARY - Foramen rotundum – GSA V3 - MANDIBULAR - - Foramen ovale – GSA & SVE V2 V3

TRIGEMINAL NERVE - V V1 V1 – OPHTHALMIC -Sup. Orbital fissure – GSA V2 - MAXILLARY - Foramen rotundum – GSA V3 – MANDIBULAR - - Foramen ovale – GSA & SVE V2 V3

V1 - OPHTHALMIC - GSA Nose Supraorbital Notch (Foramen) to face Ant & Post Ethmoidal Foramina to Nasal Cavity Superior Orbital Fissure Nose Recall : Orbit is used as way to reach face, nasal cavity

V1 - OPHTHALMIC - ALL GSA V1 1. Frontal N. 3. Lacrimal Infra- trochlear N. Supra- orbital N. Supra- trochlear N. V1 - OPHTHALMIC - ALL GSA 1. Frontal N. a) Supraorbital N. b) Supratrochlear N. Forehead, Upper Eyelid 2. Lacrimal N. Upper eyelid 3. Nasociliary N. a) Ant. and Post. Ethmoidal N. Nasal Cavity Ethmoid Sinus , Tip of Nose b) Long Ciliary N. Sensory to Cornea c) Infratrochlear N. Upper eyelid, Nose 3. Lacrimal Ant. and Post. Ethmoidal N. 1. Frontal 2. Nasociliary Long Ciliary Nn. V1

TRIGEMINAL – SENSORY BRANCHES TO FACE LACRIMAL N. SUPRAORBITAL N. V2 – MAXILLARY - to skin of cheek below orbit - Zygomaticotemporal Zygomaticofacial Infraorbital SUPRATROCHLEAR N. INFRATROCHLEAR N. EXTERNAL NASAL N. V1 – OPHTHALMIC - to skin above orbit - a. Lacrimal b. Supraorbital c. Supratrochlear d. Infratrochlear e. External Nasal Nerve (branch of Ant. Ethmoidal N.) V3- MANDIBULAR - to skin of jaw and face below angle of mouth - Auriculotemporal Buccal Mental

TRIGEMINAL NERVE - V V1 V1 – OPHTHALMIC -Sup. Orbital fissure – GSA V2 - MAXILLARY - Foramen rotundum – GSA V3 – MANDIBULAR - - Foramen ovale – GSA & SVE V2 V3

V2 - MAXILLARY - GSA V2 - Maxillary enters Pterygopalatine Fossa NOSE note: Pterygomaxillary fissure is slit between lateral pterygoid plate and maxillary bone; Pterygopalatine fossa is space medial to slit LATERAL PTERYGOID PLATE Pterygomaxillary Fissure MAXILLARY BONE

V2 - MAXILLARY - GSA 1. Meningeal Branch Dura of Middle Cranial Fossa (not shown) 2. Ganglionic branches a) Greater Palatine N. Hard Palate b) Lesser Palatine N. Soft Palate c) Nasopalatine Nasal Cavity Ant. part of hard Palate d) Nasal Branches Nasal Branches V2 Naso- Palatine Greater Palatine Lesser Palatine Note: V2 branches from Pterygopalatine Fossa to Nasal Cavity are deep and can only be seen on bisected head

V2 - MAXILLARY - GSA Inferior Orbital Fissure Pterygomaxillary Fissure Post. Sup Alveolar For.

V2 - MAXILLARY - GSA Nose Infraorbital Zygomatic V2 Post Sup. Alveolar 3. Posterior Superior Alveolar Maxillary molar teeth 4. Infraorbital Lower eyelid, nose, upper lip a) Ant. & Mid Sup Alveolar Other Maxillary teeth 5. Zygomatic - br. a) Zygomaticofacial b) Zygomaticotemporal Skin of check, temporal region V2 Post Sup. Alveolar

TRIGEMINAL – SENSORY BRANCHES TO FACE V2 – MAXILLARY - to skin of cheek below orbit - a. Zygomatico- temporal b. Zygomaticofacial c. Infraorbital V1 – OPHTHALMIC - to skin above orbit - Lacrimal Supraorbital Supratrochlear Infratrochlear External Nasal Nerve ZYGOMATICOTEMPORAL N. ZYGOMATICOFACIAL N. NOTE: These are branches of V to face - Full list of all branches of V is on CD: Reference_handout_list_of_Trigeminal_nerve_branches_2010.doc INFRAORBITAL N. V3- MANDIBULAR - to skin of jaw and face below angle of mouth - Auriculotemporal Buccal Mental

TRIGEMINAL NERVE - V V1 V1 – OPHTHALMIC -Sup. Orbital fissure – GSA V2 - MAXILLARY - Foramen rotundum – GSA V3 – MANDIBULAR - Foramen ovale – GSA & SVE V2 V3

TRIGEMINAL NERVE SVE - FIRST BRANCHIAL ARCH MUSCLES

V3 - MANDIBULAR - GSA + SVE 1. Nervus Spinosus Dura of Middle Cranial Fossa (not shown) 2. Motor to Medial Pterygoid Tensor Tympani Tensor Palati (not shown) 3. Ant Division a. Nerve to Lat. Pterygoids b. Masseteric N. c. Deep Temporal To Temporalis d. Buccal Branch Of Trigeminal Sensory to Cheek Buccal Branch Of Trigeminal Deep Temporal N. To Lat Pterygoid

V3 - MANDIBULAR - GSA + SVE Post Division a. Auriculotemporal Skin of Temple, Scalp External ear, TMJ b. Lingual Touch to Ant 2/3 Tongue c. Inf. Alveolar N. Sens to Lower Teeth i) Mental N. Skin Lower Jaw ii) Nerve to Mylohyoid - Motor to Mylohyoid & Ant. Belly of Digastric Auriculo- Temporal Lingual Inferior Alveolar N. TO MYLOHYOID MENTAL N.

TRIGEMINAL – SENSORY BRANCHES TO FACE V2 – MAXILLARY - to skin of cheek below orbit - Zygomaticotemporal Zygomaticofacial Infraorbital V1 – OPHTHALMIC - to skin above orbit - Lacrimal Supraorbital Supratrochlear Infratrochlear External Nasal Nerve AURICULOTEMPORAL N. BUCCAL N. V3- MANDIBULAR - to skin of jaw and face below angle of mouth - a. Auriculotemporal b. Buccal c. Mental MENTAL N.