Anatomy 4: Cranial Nerves Flashcards
which cranial nerves are special sensory
one two seven eight nine
Which cranial nerves are parasypapthetic
three,
seven,
nine
ten
Which cranial nerves are motor
three four V3 six seven nine ten eleven twelve
which cranial nerves are sensory
V1, 2, 3
nine
name the three branches of the trigeminal nerve
ophthalmic V1
maxillary V2
Mandibular V3
Where does the trigeminal nerve connect to the cns
PONS (only CN to do so)
What is the intracranial course of the trigeminal nerve
inferior edge of the tentorium cerebelli
Name the exit points of the trigeminal nerve from the base of the skull
V1- SOB
V2- foramen rotundum
V3- formamen ovale
what areas does V1 give sensory innervation to
Upper eyelid
cornea
conjunctiva
nose bridge
where does V2 supply (sensory)
lower eyelide
maxilla
ala of nose
upper lip
where does CN V3 supply (sensory
mandible and TMJ
except angle of mandible = C2, C3 spinal nerves
where does the greater auricular nerve supply
C2,3 branch of cervical plexus
supplies angle of mandible and external ear (some)
cn v1 deep sensory innervation
bones of orbit
upper anterior nasal cavity
paranasal sinuses except antrum
anterior and posterior cranial fossa
cn V2 deep sensory innervation
the lower posterior nasal cavity
- the maxilla & maxillary sinus (antrum)
- the floor of the nasal cavity/palate
- the maxillary teeth & associated soft tissues (gingivae & mucosae)
cn V3 deep sensory territory
the middle cranial fossa
- the mandible
- the anterior 2/3rds of the tongue
- the floor of the mouth
- the buccal mucosa
- the mandibular teeth & associated soft tissues
what does the trigeminal nerve give motor innervation
masseter temporalis medial and lateral pterygoid tensor veli palatine tensor tympani
where does CNVII connect to the cns
anterolateral at pontomedullary junction
what is the intracranial course of the facial nerve
internal acoustic meatus in posterior cranial fossa
where does cnVII exit the skull
internal acoustic meatus, stylomastoid foramen
where is the facial nerces extracranial course
somatic motor axons pass onto parotid gland
supply muscles of facial expression
where does the chorda tympani supply
anterior two thirds of the tongue tast buds
parasympathetic so submandibular and sublingual salivary glands
where does the glossopharyngeal nerve connect to the CNS
lateral aspect of superior medulla oblongata
where does the glossopharyngeal nerve exit the skull
jugular foramen
what is the function of the glossopharyngeal nerve
general sensory to posterior third of tongue, musoca of nasopharynx, oropharynx and some of laryngopharynx, palatine tonsil, Eustachian tube, middle ear
special sensory- vallate papillae on posterior third of tongue
visceral afferent to carotid sinus
somatic motor to stylopahryngeus
parasympathetic to parotid gland
