Cranial nerves Flashcards
CN II
Olfactory
CN II
Optic
CN III
Oculormotor
CN IV
Trochlear
CN V
Trigeminal
CN VI
Abducens
CN VII
Facial
CN VIII
Vestibulocochlear
CN IX
Glosspharyngeal
CN X
Vagus
CN XI
Spinal accessory
CN XII
Hypoglossal
Exit of olfactory
Cribiform plate
Cribiform plate is part of which born?
Ethmoid
Function of CN I
Sensory: smell
Exit of optic
Optic canal
Nerves of cerebrum
Olfactory
Optic
Function of CN II
Sensory:Vision
Exit of oculomotor
Superior orbital fissure
Nerves of midbrain
Oculormotor
Trochlear
Function of oculormotor:
Motor:
4 extrinsic eye muscles
Lavator palpebae superioris
Pupillary sphincter
Exit of trochlear
Superior orbital fissure
Function of CN III
Motor:
Superior oblique
Exit of trigeminal (1,2,3)
- Superior orbital fissure
- Foramen rotundum
- Foramen ovale
Parts of trigeminal nerve:
- Opthalamic
- maxillary
- mandibular
V1 function
Sensory:
Scalp
Forehead
Nose
V2 function:
Sensory: Cheeks Lower eye lid Nasal mucosa Upper lip Upper teeth Palate
V3 function:
Sensory:
Anterior 2/3rd of tongue
Skin over mandible and lower teeth
Muscles of mastication
Pons nerves:
Trigeminal
Abducens
Facial
Vestibulocochlear
Exit of abducens:
Superior orbital fissure
Function CN VI
Motor:
Lateral rectus
Exit of facial:
Internal acoustic meastus, stylomatoid foramen
Function of CN VII
Sensory: Sensation of outer part of ear
taste from anterior 2/3rd of tongue, hard and soft palate
Muscles of facial expression
Motor:
Lacrimal, submandibular, sublingual glands
Exit of vestibulococlear
Internal acoustic meatus
Function of CN VIII
Sensory:
hearing and balance
Exit of glossopharyngeal
Jugular foramen
Function of CN IX:
Sensory:
Sensation and taste from posterior 1/3rd tongue
External and middle ear cavity
Carotid body and sinus
Motor:
Parotid gland
Stylopharygeus
Exit of vagus:
Jugular foremen
Function of CN X
Sensory:
External ear, larynx, pharynx, throacic and abdominal wall
Taste from epiglottis and region of tongue
Motor:
Smooth muscles of pharynx, larynx and most GI tract
Most muscles of pharynx and larynx
Exit of spinal accessory:
Jugular foramen
Function of CN XI
Motor:
Trapezius
Sternocleidomastoid
Exit of hypoglossal
Hypoglossal canal
Function of CN XII
Intrinsic and extrinsic tongue muscles
Nerves of the medulla:
Glossopharyngeal
Vagus
Spinal accessory
Hypoglossal