the nasal mucous membrane are collected into 15~20 bundles of olfactory nerve fibers, which pass through foramina in the cribriform plate of the ethmoid bone and end in the olfactory bulb。 • It convey the sense of smell. • The severe injuries of the anterior cranial fossa, the olfactory nerves may be torn, thus producing a loss of the smell (anosmia) and the cerebrospinal leakage into the nasal cavity.
The Cochlear Nerve
• The cochlear nerve is made up by the central processes of cells of the spiral ganglion and passes to the brain through the internal acoustic meatus.
前庭蜗神经
• CN Ⅷ,为第8对脑神 经
• It consists of cochlear nerve and vestibular nerve.
• Sensory cranial nerve
• Contains the special somatic afferent fibers
• 经内耳道、内耳门入颅 • 前庭神经传导平衡觉冲
神经核神经核。