CN V Flashcards
Which CN are associated with Trigeminal sensory nuclei and which functional group
- GSA
- CN V, VII, IX, X
What are the 3 subdivisions of the Trigeminal sensory nuclei
Mesncephalic nucleus
Chief nucleus
Spinal nucleus
Trigeminal mesencephalic nucleus general
Proprioception
Projects to motor nucleus of V to control jaw jerk reflex an force of bite
Trigeminal Chief general
2 point discrimination, pressure
Trigeminal Spinal nucleus general
Pain, temperature, light touch
Trigeminla nerve division
Type and path
- Opthalmic (V1)
- Sensory
- Superior orbital fissure
- Maxillary (V2)
- Sensory
- Rotundum
- Mandible (V3)
- Motor and sensory
- Ovale
Trigeminal course and distribution
- Largest CN
- Anterior pons
- Small motor root
- Large sensory root
- Posterior cranial fossa
- Apex of petrous part of temporal bine in middle cranial fossa
- Sensory root forms trigeminal ganglion
CNV1
Function
GSA
Sensation of forehead
Scalp
Eyelids
Nose
Eye
Mucous membrane of nose and sunuses
CN V1
Origin
Associated nuclei
Target tissues, via trigeminal (semilunar) ganglion
Trigeminal sensory nucleus
3 major branches of Opthalmic Division
Frontal n
Lacrimal n
Nasociliary n
Frontal n
type
subdivisions
- CN V1–> Frontal n
- ALL SENSORY
- Supraorbital n
- Supratrochlear n
Nasociliary n
Subdivisions
- CN V1–> Nasociliary n
- Posterior ethmoid n
- Anterior ethmoid n
- External nasal n
- Infratrochlear n
- Long ciliary nn(2-3 branches)
- Short ciliary nn (8-12 branches) via ciliary ganglion
Frontal n. subdivisions functions
- Supraorbital n.
- Frontal sinus, skin superior to lateral orbit, and lateral upper eyelid
- Supratrochlear n.
- Frontal sinus, skin superior to medial orbit and medial upper eyelid
Lacrimal n. function
- Conjuctiva
- lacrimal gland
- Skin of upper eyelid
- Parasympathetic hitch-hikers
- Communicates with zygomatic n of V2
- CN 7 hitch hikes
- Associated with Pterygopalatine ganglion
Nasociliary subdivisions
- Posterior ethmoid
- Anterior ethmoid
- External nasal
- Infratrochlear n
- Long ciliary
- SHort ciliary
Posterior ethmoid
Function
Path
Ethmoid sinus, sphenoid sinus
Posterior ethmoid foramen
Anterior ethmoid
Function
Path
Ethmmoid sinus Nasal cavity
Ant ethmoid foramen
External nasal
Apex of nose
Infratrochlear n
Conjuctiva, lacrimal structures, bridge of nose, eyelids
Long Ciliary
Sclera and cornea
Sympathetic runs along with it
Short Ciliary
- Ciliary body and iris
- Hitch hikes with CN3, edinger-westphal
- Sympathetics
CN V2
Function
O
AN
Path
- GSA
- Sensation of midface, lower eyelid
- Mucous mebrane of nose and maxillary sinus
- Upper lip
- Maxillary teeth and palate
- Trigeminal Semilunar Ganglion
- AN Trigeminal Sensory nucleus
- Path: Foramen rotundum
V2 Major divisions
- Posterior superior Alveolar
- Infraorbital
- Zygomatic
- Ganglionic branches
- Pharyngeal
- Nasopalatine
- Greater/Anterior palatine
- Lesses/Posterior palatine
SUbdivisions in V2
- Infraorbital
- Middle superior alveolar
- Anterior superios alveolar
- Nasal
- Palpebrael
- Superior labial
- Zygomatic
- Communication to lacrimal
- Zygomaticofacial
- Zygomaticotemporal
Posterior Superior Alveolar
- Passes through Posterior Superior Alveolar Foramen
- Maxillary sinus
- Buccal gingiva along max molars
- Maxillary Molars (1,2,3,14,15,16)
Infraorbital
- Buccal gingiva of max central incisor, lateral incisor, canice, premolars
- Skin of inferior orbit
- Medial upper lip
Middle Superior Alveolar
- Maxillary sinus
- Maxillary premolars
Anterior Superior Alveolar n
- Maxillary Sinus
- Max central incisor
- Max lateral incisor
- Mar canine
Nasal n.
Path and function
- Infraorbital foramen
- Nasal cavity
- Nasal septum
Palpebrael n.
Path and finction
- Inferiororbital foramen
- Skin of lower eyelid
Superior labial n
Path and function
- Infraorbital foramen
- Skin of upper lip
Zygomatic subdivisions
- Communication to lacrimal n.
- Zygomaticofacial
- Zygomaticotemporal
Communication to lacrimal
Path and function
- Pterygopalatine fossa
- CN VII hitch hikes, carries parasympathetic from pterygopalatine ganglion to lacrimalof V1
Zygomaticofacial n
Path and function
- zygomaticofacial foramen
- skin inferior and lateral to orbit
- Lateral upperr lip
Zygomaticotemporal
Path and function
- Zygomaticotemporal foramen
- Skin superior and lateral to orbit
Ganglionic branches
Communication bte pterygopalatine ganglion and V2
VII hitchhikers
Carries parasympathetic from pterygopalatine ganglion to V2
Pharyngeal n.
Path and function
Pharyngeal canal
Nasopharynx
Nasopalatine n
Path and function
- Spenopalatine foramen and Incisive canal
- Hard palate
- Palatal gingiva
- Mucosa between canines
Greater/Anterior Palatine n
Path and function
- Palatine canal–> Greater anterior palatine canal
- Hard palate
- Palatal gingiva/mucosa between premolars/molars
Lesser/Posterior palatine n.
Path and function
- Paatine canal–> Lesser/Posterior canal
- Soft palate
Which nerves innervate the maxillary sinus?
MSA
PSA
ASA
Which nerves innervate the hard palate
Nasopalatine
Greater/Lesser Palatine
How is the CN V3 divided
- Anterior
- Primarily Motor
- Medial pterygoid
- Long buccal
- Masseteric
- Deep temporal
- Lateral pterygoid
- Posterior
- Primarily sensory
- Mylohyoid
- Inferior alveolar
- Incisive
- Mental
- Lingual
- Auriculotemporal
CN V3
GSA
Function
O
AN
- Sensation of
- Scalp
- External ear
- Lower face
- Mandibular teeth
- tongue
- Floor of mouth
- O: Trigeminal (semilunar) ganglion
- AN: Trigeminal Sensory nucleus
CN V3
SVE
Function
O
- Motor to
- Muscles of mastication
- Mylohyoid
- Anterior digastric
- Tensor tympani
- Tensor veli palitini
- Muscles of 1st pharyngeal arch
- O: Trigeminal motor nucleus
List the divisions of V3
- Meningeal
- Tensor tympani
- Tensor veli palitini
- Medial Pterygoid
- Long buccal
- Masseteric
- Deep temporal
- Lateral pterygoid
- Mylohyoid
- Inferior alveolar
- Incisive
- Mental
- Lingual
- Auriculotemporal
Meningeal n.
Sensory to meninges
Tensor tympani n.
Motor to tensor tympani
Tensor veli palitini n.
Motor to Tensor veli palitini
Medial pterygoid n.
Motor to medial pterygoid
Long buccal
- Sensory to
- Buccal gingiva around mandibular molars
- Cheek
- Lateral lower lip
Masseteric n.
- Motor to masseter
- Sensory to TMJ
Deep temporal n.
- Motor to temporalis
- Sensory to TMJ
Lateral pterygoid n.
Motor to lateral pterygoid
Mylohyoid n.
- Motor to
- Mylohyoid
- Anterior digastric
Inferior Alveolar n.
- Sensory to
- ALL mandibular teeth via Incisive n.
- 2nd premolars
- Molars
Incisive n.
- Sensory
- Mandibular teeth from 1st premolar anterior
Mental n.
- Sensory
- Buccal gingiva from 1st PM
- Chin
- Medial lower lip
Lingual n.
- Sensory
- Lingual gingiva of mandibular teeth,
- Taste anterior 2/3 of tongue
- Parasympathetic
- CN VII hitch-hikers from submandibular ganglion–> Submandibular and sublingual glands
Auriculotemporal n.
- Sensory
- TMJ and Capsule
- Skin superior to ear and around temple
- Parasympathetic
- CN IX hitch hikers from otic ganglion to parotid gland
