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词汇 Fourth cranial nerve
分类 英语词汇 英语翻译词典
释义

Fourth cranial nerve

中文百科

滑车神经 Trochlear nerve

(重定向自Fourth cranial nerve)

滑车神经是第4对脑神经,编号Ⅳ。

滑车神经为运动性神经,起于中脑下丘平面对侧滑车神经核,自中脑背侧下丘方出脑;自脑发出后,绕过大脑脚外侧前行,穿经海绵窦外侧壁向前,经眶上裂入眶,越过上直肌和上睑提肌向前内侧行,进入并支配上斜肌。

滑车神经是脑神经中最细的神经。

英语百科

Trochlear nerve 滑车神经

(重定向自Fourth cranial nerve)
The Cavernous Sinus
Transverse Section of the Brainstem at the level of the Inferior Colliculus

The trochlear nerve, also called the fourth cranial nerve or cranial nerve IV, is a motor nerve (a somatic efferent nerve) that innervates only a single muscle: the superior oblique muscle of the eye, which operates through the pulley-like trochlea.

The trochlear nerve is unique among the cranial nerves in several respects:

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