双峰驼面神经解剖

The Facial Nerve of Two-Humped Camel (Camelus Bactrianus)

双峰驼的面神经在伸出茎乳突孔之前发出岩大神经、镫骨肌神经、鼓索和一加入岩小神经的交通支,并接受一条来自前庭耳蜗神经的交通支和迷走神经的耳支。面神经穿出茎乳突孔之后发出耳后神经、耳内支,腮腺支二腹肌支、颈支、耳睑神经,上颊支和下颊支。6/10例面神经发出一交通支连于舌咽神经。耳后神经与第一、第二颈神经之间不见有交通支。耳后神经和耳内支有侧支分布于腮腺和腮耳肌。上颊支在犬齿肌深面分为许多小支与眶下神经的分支形成一神经丛。下颊支在下颌骨的外侧面与颏副神经有较粗的交通支相连。

Five heads of two-humped camels were dissected to study their facial nerves.The facial nerve gave off the greater petrosal nerve, stapedial nerve, chorda tympanic and the communicating branch with the lesser petrosal nerve when it ran in the facial canal.After its emergence from the stylomastoid foramen, the facial gave rise to the following branches: the caudal auricular nerve, internal auricular branch, auriculo—palpebral nerve, dorsal buccal and Ventral buccal branch.Nocommunicating branch was found connecting the caudal auricular nerve with the first and the second cervical nerves.The caudal auricular nerve and internal auricular branch gave off twigs to the parotid gland.The dorsal buccal branch divided into several small branches and formed a plexus together with the branches of the infraorbital nerve under the canius muscles.The ventral branch connected with the accessory mental nerve on the lateral aspect of the manibule.