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30 paź 2023 · The accessory nerve (CN XI) is probably one of the most controversial of the twelve cranial nerves. There is significant dispute throughout the medical literature regarding whether or not the nerve should truly be classified as a cranial 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.
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.
17 lip 2023 · During the clinical assessment for injury to CN XI (Spinal Accessory Nerve, SAN), the trapezius and sternocleidomastoid are assessed for strength and mass. The trapezius is assessed by asking the patient to shrug his or her shoulders with and without resistance, and the sternocleidomastoid is tested by asking the patient to turn his or her head ...
The accessory nerve, also known as the eleventh cranial nerve, cranial nerve XI, or simply CN XI, is a cranial nerve that supplies the sternocleidomastoid and trapezius muscles. It is classified as the eleventh of twelve pairs of cranial nerves because part of it was formerly believed to originate in the brain.
Assessment. A thorough medical and objective history should be carried out to determine the reasons for damage and the extent of the damage. Imaging tests such as EMG are often ordered.
6 maj 2023 · Functional testing of the optic nerve requires multiple operational assessments to assess the integrity of the nerve. Testing includes evaluation of visual acuity, the visual fields, pupillary light reflexes, the accommodation reflex, and fundoscopy (ophthalmoscopy).
