auditory nerve definition ear
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- : either of the eighth pair of cranial nerves connecting the inner ear with the brain, transmitting impulses concerned with hearing and balance, and composed of the cochlear nerve and the vestibular nerve—called also acoustic nerve, auditory, eighth cranial nerve, vestibulocochlear nerve.efinition of AUDITORY NERVE. : either of the eighth pair of cranial nerves connecting the inner ear with the brain and transmitting impulses concerned with hearing and balance — see ear illustration. See auditory nerve defined for kids. ADVERTISEMENT. noun.
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Auditory tube - Medical Definition Medical Definition of Auditory tube Auditory tube: The tube that runs from the middle ear to the pharynx, also known as the Eustachian tube. The function of this tube is to protect, aerate and drain the middle ear (and mastoid). Occlusion of the Eustachian tube leads to the development of middle ear inflammation (otitis media). This tube is also called the otopharyngeal tube (because it connects the ear to the pharynx) and in medical Latin it is the tuba acustica, tuba auditiva, or tuba auditoria.
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- Auditory Nerve. Usually, hearing loss that is called sensorineural or nerve deafness is actually caused by problems with the cochlea, instead of the actual auditory nerve, but a very small percentage of hearing loss is caused by problems with the nerve, itself ... usually related to acoustic neuromas (tumors) on the nerve covering.
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- The auditory nerve is also part of the inner ear; it runs from the cochlea to the brain stem in order to transmit the sound signal (nerve impulses) to the brain. If you get an ear infection, chances are it is due to fluid build up in the middle ear.
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Vestibulocochlear nerve The vestibulocochlear nerve (auditory vestibular nerve) , known as the eighth cranial nerve, transmits sound and equilibrium (balance) information from the inner ear to the brain.
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nerve deafness Medical Definition of nerve deafness. : hearing loss or impairment resulting from injury to or loss of function of the organ of Corti or the auditory nerve—called also perceptive deafness; compare central deafness, conduction deafness.
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The Structure of the ear The inner ear is probably the most remarkably intricate piece of the body. It makes hearing possible by converting sound into electrical impulses that then travel along the hearing nerve (the acoustic nerve or auditory nerve) to the brain. The inner ear also plays a major role in balance.
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Auditory tube - Medical Definition Auditory tube Auditory tube: The tube that runs from the middle ear to the pharynx, also known as the Eustachian tube. The function of this tube is to protect, aerate and drain the middle ear (and mastoid). Occlusion of the Eustachian tube leads to the development of middle ear inflammation (otitis media).
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- The vestibulocochlear nerve (auditory vestibular nerve) , known as the eighth cranial nerve, transmits sound and equilibrium (balance) information from the inner ear to the brain.1  1 Structure.he vestibulocochlear nerve consists mostly of bipolar neurons and splits into two large divisions: the cochlear nerve and the vestibular nerve.
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Ear anatomy and physiology Overview of the ear. The ear is the sense organ that enables us to hear. Hearing can be defined as the perception of sound energy via the brain and central nervous system. Hearing consists of two components: identification of sounds (what the sound is) and localisation of those sounds (where the sounds are coming from).
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Ears and Hearing Visible on the exterior of the head is the auricle, the external part of the ear that extends from the head.... Click to read more below. The ear is a group of sensory organs in the head that collaborate to produce the sense of hearing.Together these organs perform the amazing function of converting sound waves in air into electrical signals to transmit to the brain.The ear also contains several special structures that produce the body’s sense of equilibrium, or balance. Three major regions make up the ear: the outer ear, middle ear, and inner ear.The outer ear consists of the exterior structures of the ear, the auricle and external auditory canal.he ear also contains several special structures that produce the body’s sense of equilibrium, or balance. Three major regions make up the ear: the outer ear, middle ear, and inner ear. The outer ear consists of the exterior structures of the ear, the auricle and external auditory canal.
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neuroma a tumor or new growth largely made up of nerve cells and nerve fibers. adj., adj neurom´atous. acoustic neuroma a benign tumor within the auditory canal arising from the eighth cranial (acoustic) nerve. Hearing loss begins in the teens or early 20's and may be surgically managed. tumor or new growth largely made up of nerve cells and nerve fibers. adj., adj neurom´atous. acoustic neuroma a benign tumor within the auditory canal arising from the eighth cranial (acoustic) nerve. Hearing loss begins in the teens or early 20's and may be surgically managed.
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- Nerve Pathways. The electrical impulses created in the inner ear chamber are transmitted to the brain by the hearing nerve. The nerve pathways leading to the brain are enclosed in a small boney canal along with the nerve of balance and the nerve which stimulated movement of the facial muscles. Brain.
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Auricle Human ear, organ of hearing and equilibrium that detects and analyzes noises by transduction (or the conversion of sound waves into electrochemical impulses) and maintains the sense of balance (equilibrium).
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inner ear inner ear. noun. Medical Definition of inner ear. : the essential part of the vertebrate organ of hearing and equilibrium that typically is located in the temporal bone, is innervated by the auditory nerve, and includes the vestibule, the semicircular canals, and the cochlea—called also internal ear.
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ear canal ear canal - either of the passages in the outer ear from the auricle to the tympanic membrane acoustic meatus, auditory canal, auditory meatus, external auditory canal auricular point, auriculare - the craniometric point at the center of the opening of the external acoustic meatus
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Vestibulocochlear nerve The vestibulocochlear nerve (sometimes referred to as the auditory nerve) is the eighth of twelve cranial nerves. This group includes all the nerves that emerge from the cranium (skull), as opposed to those that emerge from the vertebral column (spinal cord). It is a paired set of nerves (one from each ear) and the nerve is located in the internal auditory canal, a part of the skull's temporal bone.
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How Nerves Work They respond to a variety of stimuli (heat, pressure, chemicals) and sense tissue damage. Auditory receptors in the inner ear sense vibrations from sound waves. Typically, a stimulus causes ionic changes in the receptor neuron's dendrites, which lead to the formation of action potentials in the receptor neurons.
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Ch 3: Nerves and the Senses Study Guide Video: The Ear: Hair Cells, Organ of Corti & the Auditory Nerve. In this lesson, you'll learn the most important things about cranial nerve VIII, the auditory nerve and the Organ of Corti. In addition, you'll realize that even though you may not like it, your ears are quite hairy thanks to hair cells.
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Acoustic Neuroma An acoustic neuroma is a noncancerous growth that develops on the eighth cranial nerve. Also known as the vestibulocochlear nerve, it connects the inner ear with the brain and has two different parts. One part is involved in transmitting sound; the other helps send balance information from the inner ear to the brain.Acoustic neuromas -- sometimes called vestibular schwannomas or neurolemmomas -- usually grow slowly over a period of years.F2 is an inherited disorder characterized by the growth of noncancerous tumors in the nervous system. Acoustic neuromas are the most common of these tumors and often occur in both ears by age 30. NF2 is a rare disorder. It accounts for only 5% of acoustic neuromas.
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New York Eye and Ear Infirmary An acoustic neuroma (sometimes termed neurinoma or schwannoma) is a benign (non-cancerous) tumor that arises on the nerve of hearing and balance (8th Cranial Nerve) within the inner ear. The nerve of hearing and balance sends information from the ear to the brain. The cause of most acoustic neuromas is unknown.
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Vestibulocochlear nerve This is the nerve along which the sensory cells (the hair cells) of the inner ear transmit information to the brain. It consists of the cochlear nerve, carrying information about hearing, and the vestibular nerve, carrying information about balance.he vestibulocochlear nerve (auditory vestibular nerve) , known as the eighth cranial nerve, transmits sound and equilibrium (balance) information from the inner ear to the brain. 1  1 Structure.
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- Definition of AUDITORY NERVE. : either of the eighth pair of cranial nerves connecting the inner ear with the brain and transmitting impulses concerned with hearing and balance — see ear illustration. See auditory nerve defined for kids. ADVERTISEMENT.
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Cochlear nerve The cochlear nerve carries auditory sensory information from the cochlea of the inner ear directly to the brain.The other portion of the vestibulocochlear nerve is the vestibular nerve, which carries spatial orientation information to the brain from the semicircular canals.n terms of anatomy, an auditory nerve fiber is either bipolar or unipolar, with its distal projection being called the peripheral process, and its central projection being called the axon; these two projections are also known as the peripheral axon and the central axon, respectively.
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Ear My KenhubHead & NeckOuter ear and auditory tube. Contents. An organ situated bilaterally on the Human Cranium, at the same level as the Nose, bordering the Face and the Head. It is the motherboard for Somatic Balance and Hearing and consists of the Outer, Middle and Inner Ear.
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Anatomy Physiology. The main function of the auditory ossicles is the conduction of sounds to the inner ear where they transduced into nerve signals and sent onward to the brain. Sound waves entering the ear pass through the auditory canal of the outer ear and trigger vibrations in the tympanic membrane. These vibrations are conducted into the malleus, which is connected to the tympanic membrane through its handle region.