What nerve Innervates tensor tympani?

The tensor tympani is innervated by a branch of the fifth cranial nerve, whereas the stapedius is innervated by a branch of the seventh cranial nerve. The muscles receive a dense innervation from motor neurons.

What nerve Innervates middle ear?

Two cranial nerves provide motor branches to the muscles of the middle ear. Branches of the trigeminal nerve named for their respective muscles innervate the tensor tympani and tensor veli palatini muscles within the tympanic cavity.

What 2 cranial nerves innervate the middle ear muscles?

Motor innervation to the muscle attachments of the Eustachian tube is provided by the pharyngeal plexus of the vagus nerve (cranial nerve X) and the mandibular branch of the trigeminal nerve (cranial nerve V).

Is tensor tympani control rare?

Voluntary control over the tensor tympani muscle is an extremely rare event. However, an understanding of the potential audiometric effects of its contraction could aid the diagnosis of hearing disorders.

What is the function of tensor tympani?

The tensor tympani muscle is attached to the malleus. Its role in the acoustic reflex is to pull the malleus away from the eardrum.

How do you treat tensor tympani?

Surgery on the stapedius and tensor tympani tendons (tenotomy) has been used for treatment — with varying degrees of success — when more conservative treatments have failed. A 2014 clinical study suggests an endoscopic version of this surgery as a possible therapeutic option.

What are the symptoms of nerve damage in the ear?


  • Hearing loss, usually gradually worsening over months to years — although in rare cases sudden — and occurring on only one side or more severe on one side.
  • Ringing (tinnitus) in the affected ear.
  • Unsteadiness or loss of balance.
  • Dizziness (vertigo)
  • Facial numbness and weakness or loss of muscle movement.

What parts are in the middle ear?

The middle ear is an air-filled cavity that sits between the tympanic membrane [3] and the inner ear. The middle ear also consists of three tiny bones called ossicles [4], the round window [5], the oval window [6], and the Eustachian tube [7].

How do you massage a eustachian tube?

Massaging your Eustachian tubes is a great way to combat ear infection pain. Using a gentle amount of pressure, press lightly on the area along the back of the ear that meets your jawbone, continuously push and release this flap of skin several times to open the Eustachian tubes up.

Why can I make my ears crackle?

Too much earwax buildup in your ear canal may make “crackling” noises as you move your jaw. This may happen naturally. It can also be caused by using cotton swabs to clean your ear. Clogged eustachian tubes.

What causes tensor tympani syndrome?

Klockhoff suggested that the “tensor tympani syndrome” may be caused by increased psychic tension and psychosomatic muscle dysfunctions in the scalp and middle ear. The formulation seems somewhat similar to blinking — people blink more when they are under stress.

Where is the tensor tympani located in the ear?

Tensor tympani is a tiny, but long paired muscle of the middle ear. Together with the stapedius, it belongs to the group of intratympanic muscles. Tensor tympani occupies a bony canal found superior to the osseous part of the auditory tube (pharyngotympanic tube; Eustachian tube).

What are the two nerves in the middle ear?

2 nerves: chorda tympani and tympanic plexus. Vessels supplying and emptying the middle ear. Ligaments of the ear ossicles. The mucous membrane lining of the middle ear invests all the structures inside it and creates several folds, which project into the cavity supplying it a honey comb look.

How is the tensor tympani vascularized in the middle meningeal artery?

Tensor tympani is vascularized by the superior tympanic branch of the middle meningeal artery. Tensor tympani acts to pull the handle of malleus medially.

Can a person with hyperacusis contract the tensor tympani muscle?

In some people with hyperacusis, the tensor tympani muscle can contract just by thinking about a loud sound.