Anatomy - Cranial Nerves Flashcards
what are the three parts of the course of a cranial nerve?
CNS
intracranial
extra cranial
what is the intracranial part of the course of a cranial nerve?
between the connection with the CNS and its base of skull foramina
what nerve exits the skull via the cribriform plate of the ethmoid bone?
CN I
what nerve exits the skull via the optic canal?
CN II
what nerve exits the skull via the superior orbital fissure?
CN III
CN IV
CN V1
CN VI
what nerve exits the skull via the foramen rotundum?
CN V2
what nerve exits the skull via the foramen ovale?
CN V3
what nerve exits the skull via the internal acoustic meatus?
CN VII
CN VIII
what nerve exits the skull via the jugular foramen?
CN IX
CN X
CN XI
what nerve exits the skull via the hypoglossal canal?
CN XII
what are the three divisions of the trigeminal nerve?
ophthalmic
maxillary
mandibular
where does the trigeminal nerve connect to the CNS?
pons
describe the intracranial part of the course of the trigeminal nerve?
passes inferior to the edge of the tentorium cerebella between the posterior and middle cranial fossae
where does CN V1 exit the skull?
superior orbital fissure
where does CN V2 exit the skull?
foramen rotundum
where does CN V3 exit the skull?
foramen ovale
what nerve supplies the skin over the angle of the mandible?
great auricular nerve
where does the facial nerve connect to the CS?
anterolaterally at the pontomedullary junction
describe the intracranial part of the facial nerve course
goes directly into the internal acoustic meatus in the posterior cranial fossa
what two base of skull foramina does the facial nerve exit the skull via?
internal acoustic meatus
stylomastoid foramen
where does the glossopharyngeal nerve connect to the CNS?
the lateral aspect of the superior medulla oblongata
where does the glossopharyngeal nerve exit the skull?
jugular foramen
where does the vagus nerve connect to the CNS?
lateral aspect of the medulla oblongata
inferior to CN IX
where does the vagus nerve exit the skull?
jugular foramen