Lec 4 Face (Cranial Nerve Amazing Table) Flashcards
What nerve supplies the top half of the nose?
Trigeminal nerve (V1; ophthalmic nerve)
What nerve supplies the bottom half of the nose?
Trigeminal nerve (V2; maxillary nerve)
What nerve provides motor innervation to the stylopharyngeus?
CN 9 (glossopharyngeal)
What nerve provides motor innervation to the tensor veli palatini?
CN 5 (trigeminal; V3)
What is the cranial exit of CN 1?
foramina in cribiform plate of ethmoid bone
- olfactory
What is the cranial exit of CN 2?
optic canal
- optic
What is the cranial exit of CN 3?
superior orbital fissure
- oculomotor
What is the cranial exit of CN 4?
superior orbital fissure
- trochlear
What is the cranial exit of CN 5?
V1 - superior orbital fissure
V2 - foramen rotundum
V3 - foramen ovale
- trigeminal
What is the cranial exit of CN 6?
superior orbital fissure
- abducent
What is the cranial exit of CN 7?
internal acoustic meatus, facial canal, stylomastoid foramen
- facial
What is the cranial exit of CN 8?
internal acoustic meatus
- vestibulocochlear
What is the cranial exit of CN 9?
jugular foramen
- glossopharyngeal
What is the cranial exit of CN 10?
jugular foramen
- vagus
What is the cranial exit of CN 11?
jugular foramen
- spinal accessory
What is the cranial exit of CN 12?
hypoglossal canal
- hypoglossal
What is the main action of CN I?
smell from nasal mucosa
(olfactory)
What is the main action of CN II?
vision from retina
(optic)
What is the main action of CN III?
- motor to superior, inferior, and medial recti, inferior oblique, and levator palpebrae superioris muscles
- parasympathetic innervation to sphiter pupillae and ciliary muscles
(oculomotor)
What is the main action of CN IV?
motor to superior oblique that assists in directing gaze inferolaterally
(trochlear)
What is the main action of CN V1?
sensation from cornea, skin of forehead, scalp, eyelids, nose, and mucosa of nasal cavity
(ophthalmic of trigeminal)
What is the main action of CN V2?
sensation from skin of face over maxilla, including upper lip, maxillary teeth, mucosa of nose, maxillary sinuses, and palate
(maxillary of trigeminal)
What is the main action of CN V3?
- sensation from skin of face overlying mandible including lower lip, mandibular teeth, TMJ, mucosa of mouth and anterior 2/3 of tongue
- motor to muscles of mastication, mylohyoid, anterior belly of digastric, tensor veli palatini, and tensor tympani
(mandibular of trigeminal)
What is the main action of CN VI?
motor to lateral rectus that directs gaze laterally
(abducent)
What is the main action of CN VII?
- motor to muscles of facial expression and scalp; supplies stapedius of middle ear, stylohyoid, and posterior belly of digastric
- taste from anterior 2/3 of tongue
- parasympathetic innervation of submandibular and sublingual salivary glands, lacrimal galnds of nose and palate
(facial)
What is the main action of CN VIII?
- vestibular sensation from semicircular ducts, utricle, and saccule related to position and movements of head
- hearing from spiral organ
(vestibulocochlear)
What is the main action of CN IX?
- motor to stylopharyngeus
- parasympathetic innervation
- visceral sensation from parotid gland, carotid body, pharynx, and middle ear
- taste from posterior 1/3 of tongue
- cutaneous sensation from external ear
(glossopharyngeal)