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Cranial Nerve 8

Aka: Cranial Nerve 8, Cranial Nerve VIII, Acoustic Nerve, Cochlear nerve, Vestibular nerve, CN 8
  1. Course
    1. Originate as two separate nuclei
      1. Cochlear nerve (innervates Organ of Corti)
      2. Vestibular nerve (innervates semicircular canals)
    2. Fibers from both nerves join to form 1 trunk
    3. Passes via internal auditory canal
  2. Exam
    1. Cochlear nerve
      1. Hearing Testing
    2. Vestibular nerve
      1. Vestibular Testing (Labyrinthine testing)
      2. Spontaneous Nystagmus

Acoustic Nerve (C0001162)

Definition (MSH) The 8th cranial nerve. The vestibulocochlear nerve has a cochlear part (COCHLEAR NERVE) which is concerned with hearing and a vestibular part (VESTIBULAR NERVE) which mediates the sense of balance and head position. The fibers of the cochlear nerve originate from neurons of the SPIRAL GANGLION and project to the cochlear nuclei (COCHLEAR NUCLEUS). The fibers of the vestibular nerve arise from neurons of Scarpa's ganglion and project to the VESTIBULAR NUCLEI.
Definition (CSP) cranial nerve concerned with hearing, balance and head position; the 8th cranial nerve which branches into two parts, a cochlear part integral to hearing and a vestibular part which mediates the sense of balance and head position; also called the vestibulocochlear nerve.
Definition (NCI) The eighth cranial nerve composed of the acoustic nerve and the vestibular nerve. The nerve travels from the inner ear, enters the cranial cavity through the internal auditory foramen and joins the brainstem. The auditory nerve conveys impulses from the cochlea of the inner ear to the auditory nuclei of the brainstem. The vestibular nerve carries information from the labyrinths of the inner ear to the vestibular nuclei of the brainstem.
Concepts Body Part, Organ, or Organ Component (T023)
MSH D000159
English Acoustic and vestibular nerves, Acoustic Nerve, auditory nerve, Cochlear-vestibular nerve, Cochleovestibular nerve, Cranial Nerve Eight, Cranial Nerve VIII, Cranial Nerve VIIIs, Eighth cranial nerve, Eighth Cranial Nerves, Stato-acoustic nerve, Statoacoustic nerve, Vestibulocochlear Nerve, Vestibulocochlear nerve structure, Vestibulocochlear nerve tree, Vestibulocochlear Nerves, VIIIth Cranial Nerve
Spanish estructura del nervio auditivo, nervio auditivo, nervio estatoacustico, nervio vestibulococlear, octavo nervio craneal, octavo par craneal, octavo par craneano, VIII par craneal
Parent Concepts Cranial Nerves (C0010268), Peripheral Nervous System (C0206417), root (of UWDA hierarchy) (C0391807)
Sources AOD , CSP, LCH, MSH, MTH, NCI, SCTSPA, SNOMEDCT, UWDA
Derived from the NIH UMLS (Unified Medical Language System)


Cochlear Nerve (C0009201)

Definition (MSH) The cochlear part of the 8th cranial nerve (VESTIBULOCOCHLEAR NERVE). The cochlear nerve fibers originate from neurons of the SPIRAL GANGLION and project peripherally to cochlear hair cells and centrally to the cochlear nuclei (COCHLEAR NUCLEUS) of the BRAIN STEM. They mediate the sense of hearing.
Definition (CSP) cochlear part of the 8th cranial nerve (vestibulocochlear nerve); cochlear nerve fibers originate from neurons of the spiral ganglion and project peripherally to cochlear hair cells and centrally to the cochlear nuclei of the brain stem; mediates the sense of hearing.
Concepts Body Part, Organ, or Organ Component (T023)
MSH D003056
English Acoustic Nerve, Acoustic Nerves, Auditory Nerve, Auditory Nerves, Cochlear division of vestibulocochlear nerve, Cochlear Nerve, Cochlear Nerves, Cochlear root of acoustic nerve, Cochlear root of eighth cranial nerve, Nervus cochlearis, Structure of cochlear nerve
Spanish estructura del nervio coclear, nervio coclear, raiz coclear del nervio auditivo, raiz coclear del nervio estatoacustico, raiz coclear del octavo nervio craneal, raiz coclear del octavo par craneal, raiz coclear del VIII par craneal
Parent Concepts Auditory pathway structure (C0004308), Acoustic Nerve (C0001162), Cranial Nerves (C0010268), Cochlear structure (C0009195), Cranial nerve part (C1268168), Branch of vestibulocochlear nerve (C0925773)
Sources AOD , CSP, MSH, MTH, NCI, SCTSPA, SNOMEDCT, UWDA
Derived from the NIH UMLS (Unified Medical Language System)


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