How do you test the spinal accessory nerve CN XI?
Ask the patient to face away from you and observe the shoulder contour for hollowing, displacement, or winging of the scapula. Observe for drooping of the shoulder. Place your hands on the patient’s shoulders and press down as the patient elevates or shrugs the shoulders and then retracts the shoulders.
What does cranial nerve number 11 do?
Anatomical terms of neuroanatomy The accessory nerve is a cranial nerve that supplies the sternocleidomastoid and trapezius muscles. It is considered as the eleventh of twelve pairs of cranial nerves, or simply cranial nerve XI, as part of it was formerly believed to originate in the brain.
How do you test cranial nerve 11?
11th Cranial nerve The 11th (spinal accessory) cranial nerve is evaluated by testing the muscles it supplies: For the sternocleidomastoid, the patient is asked to turn the head against resistance supplied by the examiner’s hand while the examiner palpates the active muscle (opposite the turned head).
Is cranial nerve 11 sensory or motor?
Cranial nerves I, II, and VIII are pure sensory nerves. Cranial nerves III, IV, VI, XI, and XII are pure motor nerves. Cranial nerves V, VII, IX, and X are mixed sensory and motor nerves. The olfactory nerve (CN I) contains special sensory neurons concerned with smell.
Which cranial nerve can be tested by turning the head?
Accessory Nerve. The accessory nerve is a purely motor branch to the trapezius and sternocleidomastoid muscles: Sternocleidomastoid can be assessed by asking the patient to turn their head to each side, against the examiners resistance.
How do you test cranial nerve 10?
Cranial Nerves 9 & 10 – Motor The motor division of CN 9 & 10 is tested by having the patient say “ah” or “kah”. The palate should rise symmetrically and there should be little nasal air escape. With unilateral weakness the uvula will deviate toward the normal side because that side of the palate is pulled up higher.
What is the 11th cranial nerve?
Eleventh cranial nerve: The eleventh cranial nerve is the accessory nerve. The twelve cranial nerves, the accessory nerve included, emerge from or enter the skull (the cranium) as opposed to the spinal nerves which emerge from the vertebral column.
How do you assess 11 cranial nerves?
The 11th (spinal accessory) cranial nerve is evaluated by testing the muscles it supplies: For the sternocleidomastoid, the patient is asked to turn the head against resistance supplied by the examiner’s hand while the examiner palpates the active muscle (opposite the turned head).
How do you test cranial nerves?
To test this during the cranial nerve examination, the doctor might ask you to lift your eyebrows, screw up your eyes, bare your teeth and puff out your cheeks. In order to assess hearing, which relates to the eighth cranial nerve, a tuning fork will be sounded and placed first behind your ears, then beside each ear.
How to assess cranial nerve?
12th Cranial nerve. The 12th (hypoglossal) cranial nerve is evaluated by asking the patient to extend the tongue and inspecting it for atrophy, fasciculations, and weakness (deviation is toward the side of a lesion).
How do you test cranial nerve 2?
To test cranial nerve II….optic nerve: Perform the confrontation visual field test and visual acuity test with a Snellen chart. Confrontation Visual Field Test. Assesses peripheral vision: Stand arm’s length from the patient. Cover your left eye, while the patient covers their right eye.
What is the cranial nerve examination?
The cranial nerve exam is a type of neurological examination. It is used to identify problems with the cranial nerves by physical examination. It has nine components. Each test is designed to assess the status of one or more of the twelve cranial nerves (I-XII).