Accessory nerve - Wikipedia
The spinal accessory nerve is notable for being the only cranial nerve to both enter and exit the skull. This is due to it being unique among the cranial nerves in having neurons in the spinal cord. [ 9 ]
Accessory nerve (CN XI): Anatomy, pathways and function - Kenhub
2023年10月30日 · The cranial accessory nerve has a similar function to the vagus nerve. It carries motor innervation to the pharyngeal constrictors, larynx, and muscles of the soft palate (except tensor veli palatini). The spinal accessory nerve is a purely motor entity. It innervates both the trapezius and the sternocleidomastoid muscles.
The Accessory Nerve (CN XI) - Course - Motor - TeachMeAnatomy
2023年10月12日 · 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 Accessory Nerve: Anatomy, Function, and Treatment
2023年7月17日 · The spinal component of the accessory nerve is made up of roots from the sixth and seventh cervical vertebrae, which are in your neck. Once the nerve is formed, it runs up to enter the cranial cavity through an opening called the foramen magnum, which is a large opening near the back of the skull.
Neuroanatomy, Cranial Nerve 11 (Accessory) - StatPearls - NCBI Bookshelf
2023年7月17日 · 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.
Accessory Nerve Cranial Nerve 11 - Physiopedia
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.
Accessory Nerve Injury - StatPearls - NCBI Bookshelf
2022年12月19日 · As the accessory nerve travels down and away from the brain, the cranial and spinal pieces of the nerve come together to form the spinal accessory nerve (SAN). The fusion of cranial and spinal contributions within the skull base forms the spinal accessory nerve. It exits the skull through the jugular foramen adjacent to the vagus nerve. [2] .
Cranial Nerve XI: The Spinal Accessory Nerve - Clinical Methods
The nerve descends in the neck near the jugular vein and supplies the sternocleidomastoid and trapezius muscles, joined by motor or sensory contributions from the upper cervical nerves. Some recent insights into the supranuclear contributions are …
Spinal accessory nerve - e-Anatomy - IMAIOS
Spinal accessory nerve refers to the spinal component of the accessory nerve, which innervates the sternocleidomastoid and trapezius muscles. The accessory nerve is the eleventh cranial nerve, which is purely somatic motor.
The Essential Guide to the Accessory Nerve: Functions, Disorders, …
The accessory nerve is a paired nerve that originates in the upper spinal cord and branches out to connect with various muscles in the body. Its primary function is to control the movement of specific muscles, particularly those involved in head …
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