Skull and Cranial Nerves II Flashcards
What is CN I?
Olfactory n.
What is CN II?
Optic nerve
What is CN III?
Oculomotor n.
What is CN IV?
Trochlear
What is CN V?
Trigeminal
What are the branches of CN V?
1 - opthalmic
2 - maxillary
3 - mandibular
What is the function of CN V?
Provide sensory innervation to the face
What is CN VI?
Abducent
What is CN VII?
Facial n.
What is CN VIII?
Vestibulocochlear n.
What is the function of CN VIII?
Vestibular apparatus - balance
Cochlea - hearing
Where does CN VIII enter?
Temporal bone with facial nerve at the internal acoustic meatus
What does the CN V3 do specifically?
Motor innervation to the muscles of mastication and muscles in the ear, pharynx with tensor in the name
What is CN IX?
Glossopharyngeal
What do the CN V branches exit from?
Trigeminal ganglion
What is the function of CN IX?
Motor innervation to stylopharyngeus
Parotid gland
Taste to posterior 1/3 of tongue
Sensation to post. 1/3 of tongue, oropharynx, middle ear, auditory tube, carotid sinus, and carotid body
What is CN X?
Vagus n.
What is CN XI?
Accessory n.
What is CN XII?
Hypoglossal n.
What is the function of CN XII?
Motor innervation to almost all of the intrinsic and extrinsic tongue muscles
What muscles does CN XI innervate?
Brachiocephalicus, omotransversarius, sternocephalicus, and trapezius
