![[内囊]膝 - 脑 - 基地核和相关结构 - e-Anatomy](https://cdn.imaios.cn/i/imaios-images/web/images/eanatomy/modules/cerveau-anatomie/images/v4/40c9fe4b63ca941193f7db1631904bea948d7296c5bede6d70d2148811491dd3?ar=640:670&auto=format,compress&bg=FFFFFF&fit=crop&p64=MTE4NCw0OTA&t=W-WGheWbil3ohp0&tf=Tm90byBTYW5zIFND&tx=1184&ty=490&w=350&wk=1&s=c658749d69fb0e1a73049772eec9612b)
[内囊]膝
Genu capsulae internae
定义
内囊膝是内囊的弯曲部分，由皮质核束的纤维构成。该区域的纤维称为膝状纤维；这些纤维起源于大脑皮质的运动区，向下穿过大脑脚底，与皮质脊髓纤维伴行后，进行交叉，终止于对侧颅神经的运动核。内囊膝含有皮质延髓束，该束将上运动神经元从运动皮质传导至颅神经核，主要支配头面部横纹肌的运动。
參考資料
This definition incorporates text from the wikipedia website - Wikipedia: The free encyclopedia. (2004, July 22). FL: Wikimedia Foundation, Inc. Retrieved August 10, 2004, from http://www.wikipedia.org
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