Internal ear
Internal Ear
The Internal Ear (pronounced: /ɪnˈtɜːrnəl ɪər/), also known as the inner ear, is the innermost part of the vertebrate ear. In vertebrates, the inner ear is mainly responsible for sound detection and balance.
Etymology
The term "Internal Ear" is derived from the Latin word "internus" meaning "inside" and the Old English word "ēare" meaning "ear".
Anatomy
The internal ear is composed of two main parts: the bony labyrinth and the membranous labyrinth. The bony labyrinth is a system of passages making up two main functional parts: the cochlea and the vestibular system. The membranous labyrinth is a series of sacs and ducts contained within the bony labyrinth.
Cochlea
The cochlea (pronounced: /ˈkɒkliə/) is the spiral-shaped part of the internal ear responsible for hearing. It transforms the sound in neural message.
Vestibular System
The vestibular system (pronounced: /vɛˈstɪbjʊlər ˈsɪstəm/) is the part of the internal ear involved in maintaining balance and sense of spatial orientation.
Related Terms
- Otitis Media: An infection or inflammation of the middle ear.
- Tinnitus: The perception of noise or ringing in the ears.
- Vertigo: A sensation of feeling off balance, often caused by problems in the inner ear.
See Also
External links
- Medical encyclopedia article on Internal ear
- Wikipedia's article - Internal ear
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