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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.
17 lip 2023 · In its path, the XI nerve touches the elevator of the scapula and remains superficial to the prevertebral fascia. When it drops medially to the styloid process, it touches the stylohyoid muscle and the digastric muscles.
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.
The Spinal Accessory Nerve (SAN) or Cranial Nerve 11 is termed a cranial nerve as it was originally believed to originate in the brain. It has both a cranial and a spinal part, though debate still rages regarding whether the cranial part is a part of the SAN or part of the vagus nerve.
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. Check out our summary of the cranial nerves.
22 maj 2017 · Abstract. The eleventh cranial nerve, the spinal accessory nerve (CN XI), is the only cranial nerve whose origins must be searched for outside the foramen magnum at the level of the cervical spinal level. Its anatomical course, function, pathology and major clinical syndromes are described. Download chapter PDF.
Abstract. One sentence: The accessory nerve, or CN XI, is a motor nerve that stems from the brainstem and cervical cord, and it is involved in complex eye tracking movements. Download chapter PDF.
