Accessory nerve

Upon exiting the skull via the jugular foramen, the spinal accessory nerve pierces the sternocleidomastoid muscle before terminating on the trapezius muscle.

Muscles innervated by the accessory nerve

The accessory nerve is a cranial nerve that controls the sternocleidomastoid and trapezius muscles. As part of it was formerly believed to originate in the brain, it is considered the eleventh of twelve cranial nerves, or simply cranial nerve XI.

Traditional descriptions of the accessory nerve divide it into two parts: a spinal part and a cranial part. However, because the cranial component rapidly joins the vagus nerve, becoming an integral part of said nerve, modern descriptions often consider the cranial component to be part of the vagus nerve and not part of the accessory nerve proper. For this reason, in contemporary discussions of the accessory nerve, the common practice is to dismiss the cranial part altogether, referring to the accessory nerve specifically as the spinal accessory nerve.

单词	Spinal Accessory Nerve
释义	Spinal Accessory Nerve 原声例句 Crash Course 解剖生理学篇 That's followed by your vagus nerve — you should definitely remember that one — and then the spinal accessory nerve — which has to do with moving your head and shoulders, and not whether your belt matches your shoes. 接下来是你的迷走神经——你一定记得这个——然后是脊柱辅助神经——它与移动你的头和肩膀有关，而不是与你的皮带是否匹配你的鞋子有关。英语百科 Accessory nerve The accessory nerve is a cranial nerve that controls the sternocleidomastoid and trapezius muscles. As part of it was formerly believed to originate in the brain, it is considered the eleventh of twelve cranial nerves, or simply cranial nerve XI. Traditional descriptions of the accessory nerve divide it into two parts: a spinal part and a cranial part. However, because the cranial component rapidly joins the vagus nerve, becoming an integral part of said nerve, modern descriptions often consider the cranial component to be part of the vagus nerve and not part of the accessory nerve proper. For this reason, in contemporary discussions of the accessory nerve, the common practice is to dismiss the cranial part altogether, referring to the accessory nerve specifically as the spinal accessory nerve.
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Spinal Accessory Nerve

Accessory nerve