What nerve Innervates the external ear?

Motor innervation to muscles of the external ear is supplied by branches of the facial nerve (CN VII).

What are the 3 functions of the external ear?

The external ear is composed of the pinna and the external auditory meatus. Its principal functions are to collect and funnel sound to the tympanic membrane (eardrum) and to provide cues about the location of wideband sound sources in the vertical plane.

What is the nerve associated with the ear?

The cochlear nerve, also known as the acoustic nerve, is the sensory nerve that transfers auditory information from the cochlea (auditory area of the inner ear) to the brain. It is one of the many pieces that make up the auditory system, which enables effective hearing.

What Innervates middle ear?

It is innervated by the tensor tympani nerve, a branch of the mandibular nerve. The stapedius muscle attaches to the stapes, and is innervated by the facial nerve.

What is Arnold’s nerve?

The Arnold nerve reflex describes a cough stimulated by the auricular branch of the vagus nerve, which supplies the middle aspect of the ear and ear canal. Some people (more women than men) can have a hypersensitivity cough reflex.

What is the transfer function of the outer ear?

The acoustic transfer function of an external ear means the transfer function from the sound at the entrance of the ear canal (or from the electrical input of a headphone or hearing aid coupled to the ear) to the sound at the eardrum.

What sensory function do the ears provide other than hearing?

But what other sensory functions do the ears provide? The major task function of the ear is of course to detect, transmit and transduce sound. However, that is not its only function. Another very important function of the ear is to maintain our sense of balance.

What is Alderman’s nerve?

The auricular branch of the vagus nerve is also known as the Alderman’s nerve. This is apparently because the nerve’s role in encouraging peristalsis – the movement of food through the digestive tract – was well-known a couple of hundred years ago.