Mẹo về What does cranial nerve 8 Assess? Chi Tiết
Bùi Trường Sơn đang tìm kiếm từ khóa What does cranial nerve 8 Assess? được Cập Nhật vào lúc : 2022-10-26 20:28:05 . Với phương châm chia sẻ Bí kíp về trong nội dung bài viết một cách Chi Tiết Mới Nhất. Nếu sau khi đọc tài liệu vẫn ko hiểu thì hoàn toàn có thể lại phản hồi ở cuối bài để Ad lý giải và hướng dẫn lại nha.- Contents Editors Categories Share Cite
- Introduction[edit | edit source]Anatomy[edit | edit source]Function[edit |
edit source]Physiotherapy
Implications[edit | edit source]References[edit | edit source]What does cranial nerve number 8 do?What is cranial nerve number VIII and what does it test?What sense is associated with cranial 8?
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Introduction[edit | edit source]
The vestibulocochlear nerve, also known as cranial nerve eight (CN VIII), consists of the vestibular and cochlear nerves. It is located in the internal auditory meatus (internal auditory canal).
- The vestibular nerve is primarily responsible for maintaining body toàn thân balance and eye movements, whileThe cochlear nerve is responsible for
hearing.
CN VIII injuries are the result of pathological processes or injuries that commonly involve the cerebellopontine angle (CPA), the internal auditory canal (IAC), or the inner ear. In such cases, symptoms such as vertigo, nystagmus, tinnitus, and sensorineural hearing loss may occur[1]
Anatomy[edit | edit source]
The vestibulocochlear is one of the 12 cranial nerves, it runs between the pons (the middle of the brainstem) and the medulla oblongata (the lower part of the brainstem).
- The vestibular part of the nerve then travels from the inner ear in a group of nerve cells called the vestibular ganglion.The cochlear part of the nerve travels from the cochlea in the inner ear in the
spiral ganglion[2].
Image 2: Tractography showing vestibulocochlear nerve (a procedure to demonstrate the neural tracts using special techniques of MRI, and computer-based image analysis[3]).
Function[edit | edit source]
The function of the vestibulocochlear nerve is purely sensory. It has no motor function. It communicate sound and equilibrium information from the inner ear to the brain.
- The cochlea, the part of the inner ear where the cochlear part of the nerve originates, detects soundwaves. These then travel from the spiral ganglion to the brain.The vestibular apparatus, where the vestibular part of the nerve
originates, detects changes in the head’s position based on gravity. Then the position of the head communicates information about balance to the brain[2].
Physiotherapy Implications[edit | edit source]
A problem with the sensory information being relayed to the brain via the vestibulocochlear nerve is termed a peripheral vestibular disorder.
Conditions of the vestibulocochlear nerve can affect balance and hearing and may cause vertigo, vomiting, ringing in the ears, a false sense of motion, motion sickness, or even hearing loss.
Physiotherapists are commonly involved with the retraining of balance. See below links for more details.
- BalanceBalance TrainingBenign Positional Paroxysmal Vertigo (BPPV)Vestibular Anatomy and
Neurophysiology
References[edit | edit source]
↑ Bordoni B, Sugumar K, Daly DT. Neuroanatomy, cranial nerve 8 (vestibulocochlear). StatPearls [Internet]. 2022 Jan 12.Available from:https://www.ncbi.nlm.nih.gov/books/NBK537359/ (accessed5.2.2022)↑ 2.0 2.1 Very well health CN VIII Available from:https://www.verywellhealth.com/vestibulocochlear-nerve-5095249 (last accessed 5.2.2022)↑ Sensagent Tractography Available from:://dictionary.sensagent.com/Tractography/en-en/ (accessed 5.2.2022)What does cranial nerve number 8 do?
The vestibulocochlear nerve consists of the vestibular and cochlear nerves, also known as cranial nerve eight (CN VIII). Each nerve has distinct nuclei within the brainstem. The vestibular nerve is primarily responsible for maintaining body toàn thân balance and eye movements, while the cochlear nerve is responsible for hearing.What is cranial nerve number VIII and what does it test?
The vestibular nerve travels to the vestibular system of the inner ear and detects changes in head motion to represent balance. The cochlear nerve travels to the cochlea of the inner ear and forms the spiral ganglia, which detect sound waves transmitted as electrical impulses from the inner ear structures.What sense is associated with cranial 8?
Abstract. The vestibulocochlear nerve (8th cranial nerve) is a sensory nerve. It is made up of two nerves, the cochlear, which transmits sound and the vestibular which controls balance. Tải thêm tài liệu liên quan đến nội dung bài viết What does cranial nerve 8 Assess? Cranial nerves 12 cranial nerves