Nervous System Pt 3 (Condensed Version)

KNOWT-READY TRIGEMINAL NERVE FLASHCARDS (WITH NERVE NAMES)

V1 — Ophthalmic Nerve

Ophthalmic nerve (V1) is which type of nerve

Afferent (sensory)

Ophthalmic nerve (V1) supplies sensation to which structures

Conjunctiva, cornea, eyeball, orbit, forehead, ethmoidal and frontal sinuses, part of dura mater, part of nasal cavity and nose

Ophthalmic nerve (V1) exits the skull through

Superior orbital fissure

Ophthalmic nerve (V1) major branches

Frontal nerve, lacrimal nerve, nasociliary nerve

Frontal Nerve (V1)

Frontal nerve (V1) divides into

Supraorbital nerve and supratrochlear nerve

Supraorbital nerve (V1) innervates

Forehead and anterior scalp

Supratrochlear nerve (V1) innervates

Bridge of nose, medial upper eyelid, medial forehead

Frontal nerve (V1) travels along

Roof of orbit

Lacrimal Nerve (V1)

Lacrimal nerve (V1) innervates

Lateral upper eyelid, conjunctiva, lacrimal gland

Lacrimal nerve (V1) carries

Postganglionic parasympathetic fibers to lacrimal gland

Function of parasympathetic fibers via lacrimal nerve (V1)

Production of tears

Lacrimal nerve (V1) joins V1 near

Superior orbital fissure with frontal and nasociliary nerves

Nasociliary Nerve (V1)

Nasociliary nerve (V1) supplies

Eyeball, cornea, medial eyelids, nasal cavity

Nasociliary nerve (V1) gives rise to

Long ciliary nerves, anterior/posterior ethmoidal nerves, infratrochlear nerve

Long ciliary nerves (V1) supply

Cornea, iris, ciliary body; carry sympathetic fibers

Posterior ethmoidal nerve (V1) supplies

Posterior ethmoid sinus, sphenoid sinus

Anterior ethmoidal nerve (V1) supplies

Anterior ethmoid air cells, nasal septum, lateral nasal wall

Anterior ethmoidal nerve (V1) continues as

External nasal nerve

External nasal nerve (V1) supplies

Skin of nose (bridge to tip)

Infratrochlear nerve (V1) supplies

Medial eyelid, side of nose, lacrimal sac, caruncle, medial conjunctiva

V2 — Maxillary Nerve

Maxillary nerve (V2) is which type

Afferent (sensory)

Maxillary nerve (V2) carries sensation from

Maxilla, overlying skin, oral mucosa, maxillary sinuses, nasal cavity, palate, nasopharynx, part of dura mater

Maxillary nerve (V2) exits skull through

Foramen rotundum

Largest contributor to maxillary nerve (V2) trunk

Infraorbital nerve

Maxillary nerve (V2) tributaries

Zygomatic, ASA, MSA, PSA, greater palatine, lesser palatine, nasopalatine nerves

Zygomatic Nerve (V2)

Zygomatic nerve (V2) is formed from

Zygomaticofacial + zygomaticotemporal nerves

Zygomaticofacial nerve (V2) innervates

Skin of cheek

Zygomaticotemporal nerve (V2) innervates

Skin of temporal region

Infraorbital Nerve (V2)

Infraorbital nerve (V2) supplies

Lower eyelid, lateral nose, upper lip, cheek

Infraorbital nerve (V2) exits

Infraorbital foramen

Anterior Superior Alveolar (ASA) Nerve (V2)

ASA nerve (V2) supplies

Maxillary central/lateral incisors, canines, labial periodontium

ASA nerve (V2) originates from

Dental branches in pulp

ASA nerve (V2) plexus

Superior dental plexus

Middle Superior Alveolar (MSA) Nerve (V2)

MSA nerve (V2) supplies

Maxillary premolars, mesiobuccal root of first molar, buccal periodontium (if present)

MSA nerve (V2) plexus

Superior dental plexus

MSA nerve (V2) presence

Sometimes absent

Posterior Superior Alveolar (PSA) Nerve (V2)

PSA nerve (V2) supplies

Maxillary molars, buccal periodontium, maxillary sinus mucosa

PSA nerve (V2) exits via

Posterior superior alveolar foramina

Greater Palatine (GP) Nerve (V2)

GP nerve (V2) supplies

Posterior hard palate, palatal gingiva of ipsilateral maxillary posterior teeth

GP nerve (V2) exits

Greater palatine foramen

Lesser Palatine (LP) Nerve (V2)

LP nerve (V2) supplies

Soft palate, palatine tonsils

LP nerve (V2) exits

Lesser palatine foramen

LP nerve (V2) joins

Greater palatine nerve in pterygopalatine canal

Nasopalatine (NP) Nerve (V2)

NP nerve (V2) supplies

Anterior hard palate canine to canine, nasal septum

NP nerve (V2) exits

Sphenopalatine foramen

V3 — Mandibular Nerve

Mandibular nerve (V3) is which type

Mixed (sensory + motor)

Mandibular nerve (V3) contains

All efferent fibers of trigeminal nerve

Mandibular nerve (V3) exits skull through

Foramen ovale

Mandibular nerve (V3) formed from

Small anterior trunk + large posterior trunk

Auriculotemporal Nerve (V3)

Auriculotemporal nerve (V3) supplies

Anterior auricle, external acoustic meatus, temporal scalp

Auriculotemporal nerve (V3) carries

Postganglionic parasympathetic fibers to parotid gland

Buccal Nerve (V3)

Buccal nerve (V3) supplies

Buccal mucosa & gingiva of mandibular molars, cheek skin

Lingual Nerve (V3)

Lingual nerve (V3) supplies

Anterior 2/3 of tongue (general sensation), floor of mouth

Lingual nerve (V3) carries

Taste fibers via chorda tympani and parasympathetic fibers to submandibular/sublingual glands

Inferior Alveolar Nerve (IAN, V3)

IAN nerve (V3) supplies

Mandibular teeth, buccal gingiva anterior to mental foramen, chin, lower lip

IAN nerve (V3) gives off

Mylohyoid nerve (motor)

IAN nerve (V3) travels

Mandibular canal

Mylohyoid Nerve (V3)

Mylohyoid nerve (V3) supplies

Mylohyoid muscle, anterior belly of digastric

Mylohyoid nerve (V3) function

Motor

Mental Nerve (V3)

Mental nerve (V3) exits

Mental foramen

Mental nerve (V3) supplies

Chin, lower lip, anterior buccal gingiva

Motor Branches of Mandibular Nerve (V3)

Motor branches (V3) supply

Masseter, temporalis, medial & lateral pterygoid, mylohyoid, anterior digastric, tensor veli palatini, tensor tympani