What nerve controls the trapezius muscle

Cranial nerve XI innervates the motor function of the trapezius. The function of the trapezius is to stabilize and move the scapula. The upper fibers can elevate and upwardly rotate the scapula and extend the neck.

What happens if cranial nerve 11 is damaged?

Supranuclear lesions of the eleventh nerve cause moderate, often transient, impairment of function of the sternocleidomastoid and trapezius muscles, due to the bilateral innervation. In the spinal cord the nuclei can be involved in amyotrophic lateral sclerosis, syringomyelia, polio, and intraspinal tumors.

What is the function of accessory nerve XI?

Function of the accessory nerve 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).

How do you fix cranial nerve 11?

Surgical Intervention Surgical options comprise nerve surgery, nerve grafting, and nerve regeneration. Other treatment options include tendon or muscle transfer to stabilise scapula, employed for patients not responding to nerve repair or surgery. One of the widely used surgical procedures is scapulothoracic fusion.

Where is the trapezius nerve?

TrapeziusInsertionposterior border of the lateral one-third of the clavicle, acromion process, and spine of scapulaArterysuperficial branch of transverse cervical artery or superficial cervical arteryNerveaccessory nerve (motor) cervical spinal nerves C3 and C4 (motor and sensation)

What number cranial nerve is the vagus nerve?

Neuroanatomy, Cranial Nerve 10 (Vagus Nerve)

What is the function of Abducens nerve?

The abducens nerve functions to innervate the ipsilateral lateral rectus muscle and partially innervate the contralateral medial rectus muscle (at the level of the nucleus – via the medial longitudinal fasciculus).

What happens if the vagus nerve is damaged?

A damaged vagus nerve can’t send signals normally to your stomach muscles. This may cause food to remain in your stomach longer, rather than move into your small intestine to be digested. The vagus nerve and its branches can be damaged by diseases, such as diabetes, or by surgery to the stomach or small intestine.

What happens when cranial nerve 12 is damaged?

The hypoglossal nerve can be damaged at the hypoglossal nucleus (nuclear), above the hypoglossal nucleus (supranuclear), or interrupted at the motor axons (infranuclear). Such damage causes paralysis, fasciculations (as noted by a scalloped appearance of the tongue), and eventual atrophy of the tongue muscles.

What is the name of Cranial nerve XI?

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.

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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.

What nerve supplies sternocleidomastoid?

The sternocleidomastoid muscle is generally considered to have nerve supply from the accessory nerve. However, the innervation pattern to the SCM is not so simple and it also receives fibers from the C2 and C3 anterior branches, as studied by Caliot et al.

Which cranial nerve innervates the trapezius and sternocleidomastoid?

The muscles innervated directly by the XI nerve are the trapezius and the sternocleidomastoid, in addition to the laryngeal musculature (in collaboration with the vagus nerve), such as the palatal, pharyngeal, laryngeal muscles.

What muscles does the Suprascapular nerve innervate?

The suprascapular nerve branches provide efferent innervation to the supraspinatus and infraspinatus muscles as well as sensory innervation to the shoulder joint.

Which nerve Innervates the serratus anterior muscle?

The innervation is supplied by the long thoracic nerve (C5-7), a branch of the brachial plexus. The innervation for the serratus anterior is very easy to remember if you just know the right mnemonics!

Which extraocular muscle is innervated by each abducens nerve?

Organization of the several cranial nerve nuclei that govern eye movements, showing their innervation of the extraocular muscles. The abducens nucleus innervates the lateral rectus muscle; the trochlear nucleus innervates the superior oblique muscle; (more…)

Is the levator Palpebrae Superioris in extraocular muscle?

Cranial Nerves Cranial nerve III innervates four of the six extraocular muscles of the eye as well as the levator palpebrae superioris muscle of the eyelid and, via projections to the ciliary ganglion, the small intraocular muscles that control the constriction of the pupil and the shape of the lens.

What is cranial nerve VII?

The facial nerve is the seventh cranial nerve (CN VII). … The facial nerve provides motor innervation of facial muscles that are responsible for facial expression, parasympathetic innervation of the glands of the oral cavity and the lacrimal gland, and sensory innervation of the anterior two-thirds of the tongue.

What doctor treats the vagus nerve?

A neurologist is an expert in diagnosing and treating problems of your brain, spinal cord and nerves, including these 8 neurological symptoms and disorders. A neurologist treats disorders that affect the brain, spinal cord and nerves.

What is vagal nerve?

The vagus nerve, historically cited as the pneumogastric nerve, is the tenth cranial nerve or CN X, and interfaces with the parasympathetic control of the heart, lungs, and digestive tract. It actually comprises two nerves—the left and right vagus nerves—but they are typically referred to collectively in the singular.

Where does the vagus nerve start?

Vagus nerve branches in the thorax On the right side, it arises from the trunk of the vagus as it lies beside the trachea. On the left side, it originates from the recurrent laryngeal nerve only. These branches end in the deep part of the cardiac plexus.

Why is it called pseudobulbar palsy?

Lepine, in 1877 introduced the term pseudobulbar palsy for differentiation purposes. Pseudobulbar palsy is due to an upper motor lesion caused by bilateral disturbance of the corticobulbar tracts.

Which muscle is innervated by the XII hypoglossal nerve?

Hypoglossal Nerve Stimulation The hypoglossal nerve (cranial nerve XII) innervates both the tongue protrusor (genioglossus) and retrusor (styloglossus and hyoglossus) muscles through its medial and lateral divisions.

What muscles are innervated by the hypoglossal nerve?

The hypoglossal nerve enables tongue movement. It controls the hyoglossus, intrinsic, genioglossus and styloglossus muscles. These muscles help you speak, swallow and move substances around in your mouth.

What can trigger the vagus nerve?

Breathe more slowly (aim for six breaths per minute).
Breathe more deeply, from the belly. Think about expanding your abdomen and widening your rib cage as you inhale.
Exhale longer than you inhale.

What does spinal C1 innervate?

In the cervical spine, there are eight pairs of spinal nerves labeled C1 to C8, which innervate the neck, shoulder, arm, hand, and more.

What is the name of cranial nerve V?

The trigeminal nerve (V) is the largest cranial nerve, and it has both a sensory and a motor division. The motor division of the trigeminal nerve, which has its own nucleus located in the pons, innervates the “muscles of mastication” and also the tensor muscle of the tympanic membranes of the ear.

What are the 12 cranial nerve?

I. Olfactory nerve.
II. Optic nerve.
III. Oculomotor nerve.
IV. Trochlear nerve.
V. Trigeminal nerve.
VI. Abducens nerve.
VII. Facial nerve.
VIII. Vestibulocochlear nerve.

What nerve Innervates Platysma?

The platysma, innervated by the facial nerve, is a thin, sheet-like voluntary muscle. Origin: the muscle has a broad origin with fibers arising from the fascia of the upper thorax including the clavicle, acromial region, pectoralis major and deltoid muscles.

What does Thoracodorsal nerve supply?

The thoracodorsal nerve is a pure motor nerve that innervates the latissimus dorsi muscle. … The primary blood supply of the latissimus dorsi muscle is the thoracodorsal artery. The dorsal divisions of T6 to T12 provide the sensory innervation of the skin of the latissimus dorsi muscle.