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30 paź 2023 · Pathway. The pathway of the accessory nerve can be subdivided into several components. The nerve has an intracranial course, a brief passage through a foramen, and an extracranial course. The extracranial course can be further subdivided into the course in the anterior, and then in the posterior, triangles of the neck.
12 paź 2023 · The accessory nerve is the eleventh paired cranial nerve. It has a purely somatic motor function, innervating the sternocleidomastoid and trapezius muscles. In this article, we shall look at the anatomy of the accessory nerve – its anatomical course, motor functions and clinical correlations.
17 lip 2023 · The accessory spinal nerve or XI cranial nerve is essential for neck and shoulder movement, the intrinsic musculature of the larynx, and the sensitive afferences of the trapezius and sternocleidomastoid musculature.
12 kwi 2019 · Cranial nerve XI is the accessory nerve, supplying somatic motor fibres to two large muscles: the sternocleidomastoid and trapezius. In this article, we look in more detail at the structure, function and clinical relevance of the accessory nerve.
This nerve supplies the sternocleidomastoid and trapezius muscles, which have the following functions: Rotation of head away from the side of the contracting sternocleidomastoid muscle. Tilting of the head toward the contracting sternocleidomastoid muscle. Flexion of the neck by both sternocleidomastoid muscles.
18 sie 2024 · accessory nerve (CN XI) hypoglossal nerve (CN XII) In adults, the brainstem nuclei are located within the tegmentum, the posterior section of the brainstem (except in the midbrain where the quadrigeminal plate is most posterior). See mnemonic for cranial nerves.
3 lis 2023 · - Motor: Oculomotor nerve (CN III), trochlear nerve (CN IV), abducens nerve (CN VI), accessory nerve (CN XI), hypoglossal nerve (CN XII). - Mixed (both): trigeminal nerve (CN V), facial nerve (CN VII), glossopharyngeal nerve (CN IX), vagus nerve (CN X).
