What is accessory nucleus?

What is accessory nucleus?

Anatomical terms of neuroanatomy The spinal accessory nucleus lies within the cervical spinal cord (C1-C5) in the posterolateral aspect of the anterior horn. The nucleus ambiguus is classically said to provide the “cranial component” of the accessory nerve.

Does the olfactory nerve have a nucleus?

A cranial nerve nucleus is a collection of neurons (gray matter) in the brain stem that is associated with one or more of the cranial nerves….Location.

Olfactory nerve Olfactory bulb
Abducens nerve Abducens nucleus
Facial nerve Facial motor nucleus Superior salivatory nucleus Solitary nucleus

What are the nuclei of oculomotor nerve?

Oculomotor and Edinger-Westphal Nuclei The oculomotor nucleus is found at the level of the superior colliculus. It contains the somatic efferent fibers that control the medial rectus, inferior rectus, superior rectus, inferior oblique, and the striated muscle in the levator palpebrae superioris.

What muscles does nervus Accessorius innervate?

Accessory nerve
Innervates sternocleidomastoid muscle, trapezius muscle
Latin nervus accessorius
MeSH D000055

What does the accessory nerve control?

The accessory nerve provides motor function (movement) to two muscles essential to neck and shoulder movement, the sternocleidomastoid (SCM) and the trapezius, as well as to the larynx (voice box) and other structures in the throat.

How many oculomotor nucleus are there?

The oculomotor nerve (CN III) arises from the anterior aspect of mesencephalon (midbrain). There are two nuclei for the oculomotor nerve: The oculomotor nucleus originates at the level of the superior colliculus.

Where are oculomotor nucleus located?

medial midbrain
Both the oculomotor nucleus and Edinger-Westphal nucleus are both located in the medial midbrain, which is supplied by the paramedian branches of the upper basilar artery and the proximal posterior cerebral artery.

What nucleus of Vestibulocochlear nerve is Cochlear?

Nuclei. There are two special sensory cochlear nuclei and four special sensory vestibular nuclei located within the lower pons and upper medulla.

How do you check sternocleidomastoid?

Test the right sternocleidomastoid muscle by facing the patient and placing your right palm laterally on the patient’s left cheek. Ask the patient to turn the head to the left, resisting the pressure you are exerting in the opposite direction.