Neuroanatomy | 合法醫療器材資訊網

由SYKim著作·2020·被引用2次—TheHypoglossalNerveisthe12thCranialNerve(CranialNerveXII).Itismainlyanefferentnerveforthetonguemusculature.Thenerve ...

The Hypoglossal Nerve is the 12th Cranial Nerve (Cranial Nerve XII). It is mainly an efferent nerve for the tongue musculature. The nerve originates from the medulla and travels caudally and dorsally to the tongue.

The hypoglossal nerve is mainly a somatic efferent (motor) nerve to innervate the tongue musculature. The nerve also contains some sympathetic postganglionic fibers from the cervical ganglia, which innervates tongue vessels and some small glands in the oral mucosa.

The hypoglossal nerve consists of four branches: the meningeal, descending, thyrothyroid, and muscular. However, only the muscular branch is considered part of the real hypoglossal nerve originating from the hypoglossal nucleus. Other branches originate from spinal nerves (mainly C1/C2) or the cervical ganglia. The meningeal branch arises from C1 and C2 nerves ...